Why thinking hard makes us feel tired
nature.com
nature.com
N-acetyl Cysteine and other blood glutamate scavengers (BGS) like malic acid and pyruvate are indispensable in these scenarios. They don't solve the issue but dampen it a bit.
Additionally, a ketogenic diet helped me a lot.
Most of all, high dose niacinamide holds it in remission at times, though I have a theory it's caused by a well-set-in, chronic infection as the reduction in symptoms with niacinamide correlates with the symptoms of fighting off an infection (very swollen lymph nodes, histamine release, sometimes nausea &etc, headaches, some other clear indicators, etc). I've been on it for about 7-8 weeks or so and we're still going!
That said, having energy is a gift that is hard to quantify. Chronic fatigue takes away your ability to think about anything, so you have to have discipline to not think about anything sometimes...which also takes mental energy. It's a bit of a living hell, for suresies.
Here's hoping I get to stay in remission. <3 :')))))
Lyme, babesiosis, rocky mountain spotted fever, etc, all negative. I also did a urine Lyme DNA test a while back but looking back on it, apparently that was not an extremely reliable test (though the western blot has a decent amount of false negatives as well).
I believe it's a chronic yeast infection that's slowly traveled up under the skin of my left leg for the last 7 years or so. It started out as athletes foot in college, and then when I got past the point of being too overwhelmed to treat it, it had set in pretty well.
I wondered if the two were correlated, but over the past few years I've had increasing leg pain in that area, and the same pain in my toe where the infection was. Of course, the nature of this infection is that it seems to be resistant to many OTC classes of antifungals, so it did not budge. The most effective agent was carvacrol/thymol, which is extremely broad range (even against MRSA), but it macerated the skin to a point of strong pain, bleeding, etc, all that jazz. Even when it cleared up on the outside, there was a deep white patch under the skin that you could see under the (healthy-seeming) skin, which, of course, is its own unique class of horror.
About a year ago or so, I finally broke and decided to get rid of the skin infection no matter what. I basically mixed isopropyl alcohol and table vinegar and put it in the skin after removing the top layer of dead skin, which as it was an open wound was extremely painful. I used the reasoning that I could temporarily damage the nerves with overexcitation via the isopropyl alcohol stimulation, and that reasoning panned out after an excruciating several days, after which my nerves were damaged enough to no longer hurt under the raw vinegar and alcohol combination.
That at least cleared up the surface infection until I was on the Appalachian Trail this year (which, yes, I did my two months on it with chronic fatigue + post exertional malaise (!!!!) !), where, more than a year later, the infection inexplicably came back again.
I found niacinamide in my search for treatment-resistant infections, and it cleared up the surface infection within an astounding 2-3 days. I started taking it orally, and became extremely sick, it felt like I was being poisoned and doing a mini-chemotherapy of sorts, so I slowed down and began taking silymarin and NAC to help preserve liver and kidney function (which seems to still remain okay so far).
The process of treating it has been painful, as the initial days caused a huge flare in leg pain in my left leg corresponding with swelling of the lymph nodes almost exclusively on the left side of my body, oddly enough (though it seems to have balanced out, a bit). I was in the emergency room on my birthday last year due to the leg pain, and they couldn't figure it out so they offered a potential umbrella diagnosis of complex regional pain syndrome.
It's hard to keep up with dosing as I do have a bit of an aversion to feeling sick -- it quite literally feels like I'm being poisoned! -- but, my CMP from even this week came back okay, and I'm getting a feeling of underlying 'rightness' despite the transient negative symptoms (including having to pee every 2-3 hours...not fun).
I've had maybe two dozen doctors, both in and out of the ER (6 visits in the last year or so), or so give me that look of not quite being able to know what to do. I applied to the internal medicine program at the Mayo Clinic a few months ago and got a form letter turning me down. It's not due to incompetence, it's just that there is a long tail of extremely complicated conditions that categorically fit an umbrella of symptoms, but are extremely hard to actually track down (and the semi-binarization of medical specialties makes cross-disciplinary diagnosis extremely difficult for these vague kinds of conditions).
I'm sitting here now and can feel the leg pain when I focus on it, for example. But I think treating it is worth it -- especially as one has to work to live in many circumstances! That said, this does not underpin how grateful I am to at least have one avenue -- whether it's temporary or not -- where I can have energy.
This also doesn't cover things like the mast cell sensitivity (diagnosed as not MCAS by _two_ separate immunologists, though they both fall in the tryptase-test-philosophy camp). I react to everything, including All Free and Clear detergent, for example, and with food and such sometimes it's just eating tons of meat (it's pure muscle protein and fat and doesn't have things I can react to like lots of plants do) and multivitamins to cover the nutritional gaps.
I wish it were as simple as just having Lyme disease, as I think that would be much, much easier for me personally. But, I suppose to keep living we have to accept the limitations that we have (and unfortunately this is not the only journey of limitation I'm on -- I also have autism to a mild-moderate degree! That would be enough challenge for a normal lifetime as it is. D'''':), and I had a number of years where I really struggled (like, really really struggled). But all of that said, I think although it's taken a few years, I've come around the bend in starting that process of eventually accepting the challenges I've been given, and I am on currently on that particular upward walk of learning to enjoy the life that I do have access to in the meantime. It's not perfect, and I have a lot of big bumps in the road, for sure, but the slope for me is pointed up, and that's what I wished for for years. And I'm enjoying life a lot more than I have in the past, on average! :')))) <3 <3 <3 <3 :'))))
Hope that answers your question.
I don't have any chronic infections that I'm aware of (maybe the athletes foot) but I have experienced a stark enough improvement in overall sense of wellbeing from taking NAC that I sort of characterize my own recent history in to pre-and-post NAC phases. It's a great molecule.
NAC is quite fantastic. Not just for energy, but for autism too, in which glutamate dysfunction is also implicated! Some people do just as well with sulforaphane as well, which I really need to do.
Jarrow has a great NAC extended release brand, I've been spotty with it recently but it feels really good when I take it. Feels like my autism symptoms go down half a notch (i.e. the opposite direction of aspartame, lol), my energy goes up, and I just sorta feel more 'real', for lack of a better word.
Very great medication/molecule, all around, it does so much more than that, too (for example, NAC is just glutathione without the glutamate component IIRC, and that's how it binds the glutamate out of your bloodstream. 2 huge birds, one spicy sulfurey stone). Let's hope it stays open access, for all of the benefits it has.
I have reactions to nearly every food group out there, even things traditionally safe for many (minus the ultra safe things like rice, lamb, etc).
It's definitely not a digestion/absorption issue, in fact I have a reasonable belief that I have barrier permeability issues as things like taking GABA will result in respiratory depression + temporary oxygen starvation for a few seconds - half a minute or so (yay) followed by that emergency contraction of blood vessels that the body does when trying to get oxygen to organs. That's one good indicator of systemic barrier dysfunction, for example, as that is certainly not supposed to happen in healthy people since GABA is not supposed to cross the intestinal barrier (or the BBB for that matter) in healthy individuals (though I wonder if one tiny benefit is making GABA slightly more effective for me for anxiety over, say, the average person due to potentially-increased BBB permeability). Additionally, things like P-glycoprotein inhibitors (like piperine, etc) cause me to react much more strongly to food/environmental things.
Apples would contain, say, the most pyruvate and malic acid (though I react to apples pretty badly, sadly, I'll get arthritis-like symptoms (which makes typing and manipulating objects difficult, for example), though I take an OTC 5-LOX inhibitor nowadays that is actually surprisingly quite effective at preventing things like that from happening in accidental food exposures. Still not enough to have apples straight though, lol).
So it's things like that. Most of this is things like looking at the Krebs cycle, finding upstream things to targets that I want that seem to perform well (like oxaloacetate, which is sold at an outrageous price), and then putting them through the empirical test pipeline to see if they hold up.
Things like niacinamide for example I'm taking 1.5-2. grams a day which would be hard to get from food, pyruvate is also hard to get from food as well. I love the idea of food as medicine, but unfortunately it's mostly calories in (and thankfully I don't seem to react to multivitamins, thank God).
I've tried several thousands of dollars worth of supplements over the last several years trying to find combinations that work. This is most certainly harder than most of the machine learning problems that I work on, as the loss signal is not all that clear, really (unfortunately)!
I am glad to have found something that seems to have a positive impact, however!
Have you looked into fungal overgrowth / candidiasis? Keto seems to work for that too https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9583754/
Additionally I have seemingly incurable fungal infections on my feet, private areas etc. It's manageable but it makes me think a candida overgrowth could make sense. I also have what my doctor thinks is seborrheic dermatitis, causing a red rash that's spread over most of my face and scalp. Flakes a lot.
I wonder if there's something in this thread that could help. I asked my physician about antifungal pills as I haven't had any luck with creams etc but he wanted me to try to remove dairy from my diet. That seems to have had some effect, but the only manifestation of that effect is that if I do consume dairy my digestion acts up for a day or two. Hasn't helped the reflux or face/scalp rashes.
If anyone has any suggestions I'm open for anything.
For sebderm check out r/sebderm. From what I understand sebderm is also a fungal overgrowth, albeit a different species. (The apparent overlap between sebderm and candidiasis would point to an immune deficiency, which suggests mineral deficiency. (Which suggests digestive issues or food sensitivities, the way celiac damages the gut and severely reduces mineral uptake, issues digesting dairy can also result from undiagnosed celiac...) Have you had blood work done?
Digestive issues may also point to a Thiamine (B1) deficiency. There's some interesting work with thiamine megadoses. (I know megadoses trigger the pseudoscience alert bells, but there's real science behind this.) Something about how the mechanisms responsible for Thiamine uptake can stop working when you have a deficiency, which causes the deficiency to persist even if you return to eating normal levels. This can then be resolved with a megadose (which are considered harmless).
Also, are you getting enough sun? I have found this does wonders for me. (Alternatively supplement with Vitamin D and make sure you research the right dose, because the recommended dose was too low for many years).
Also, read up on the "carnivore diet" if you haven't already specifically the anicdotes of people online. I found it removed basically all my chronic health issues, which tells me I've become intolerant of certain foods. Re introducing is tedious though.
I can have some vegetables (yay salads! I love certain kinds of salads, have to be picky about dressings and toppings though), but at the very minimum meeting caloric needs is the core goal for me.
As far as infection goes, I've had many antibiotics over the years of different classes. I believe it's fungal (mayyyybe with a parasitic co-infection of some kind?) as that anti-parasitics/antifungals are the classes that seem to introduce the strongest response in me.
Also, I cultured some of the skin from my foot and it grew yeast, in great abundance! (not the most reliable test, but it works okay...ish, lol).
Additionally, I had the same systematic spike in pain in my leg when taking niacinamide originally as I did when surface-treating the fungal foot infection, which cleared up pretty rapidly underneath it.
Things like thujone/juglone/etc seem to be quite helpful too, though, so I do worry about a potential opportunistic parasitic component to it as well, as I seem to respond in some way to drugs in that class (even the ones potentially without apparent antifungal activity). Parasitic infections actually are quite common in the US compared to our expectations -- just look at pinworms or toxoplasmosis (even though it is quite low here in the US compared to the rest of the world)!
I think something that I've slowly been finding is hard about epidemiology is that immunocompromised individuals can be subject to a whole host of odd infections & etc in comparison to a standard, healthier population.
Thank you so very much for the recommendation, this is a great one! <3 :')))) <3 :D
One thing I learned is to ignore figuring out the exact supplements, because you’re playing an impossible balancing game with poor feedback mechanisms. There’s too many inputs.
What helped me was a combination (no one thing can solve it) of therapy (being able to listen to and not suppress emotions), key supplements (magnesium/iron - check out lactoferrin and anaemia of chronic infection), exceptional oral hygiene to reduce inflammation (4 minutes per brush), exceptional gut health (many viruses cause problems with the gut), exercise (eventually), and more…
I never used niacinamide or any of the supplements you used, which shows you that there’s no single approach. I agree that it appears to correlate with an unaddressed infection.
I've also fought a similar battle to you in a similar manner by "fix everything according to best practices."
When it comes to supplements and nutrition, it may be an impossible game, but what's important in finding the right approach is understanding at least the basic mechanism of action and knowing what you're targeting.
What I'm hearing you say is that you had an app with a performance issue, and you couldn't pinpoint whether it was CPU, Memory, Disk, Network, etc, so you solved it by doing a wholesale system upgrade by giving it all the basics that modern science says are the typical health best practices. Magnesium/Iron, exercise, gut biome, oral hygiene, etc to help. All the things you've listed are anti-inflammatory (of course there's other benefits) but generally, anti-inflammatory things are pretty good at making the body run better.
NAC on the other hand, is a precursor to glutathione, a significant anti-inflammatory molecule in the body, and usually the limiting reagent for glutathione synthesis. So it's also arguable that NAC had an anti-inflammatory effect on the body similar to the effects you received from your regimen.
Finding the right supplements are possible for sure. Usually what is needed though is a thorough analysis/observation of someone's diet and then working back the potential malnourishments that are most likely to occur and in alignment with the symptoms. But usually this takes months and years of learning and understanding to even know where to begin when it comes to suggesting a supplement.
To be clear, I found it wasn't a good use of time to spend years experimenting with many supplements that end up working temporarily and then having an antagonist effect on something else that appears months down the line.
The best use of time was taking a holistic approach. Supplements didn't save me - but without some basic supplements I wouldn't have been saved. And I agree, some basis in nutrition is important.
Been looking at pushing the button to buy some niacinamide for a while now and I may have to go for it to try.
All the best for you!
So much mitochondrial implication in any post-viral fatigue syndrome, it seems like somewhere in the stack is oftentimes disrupted, thankfully it can be managed though!
Night and day for me. On the Appalachian Trail, I had to count steps and watch my heartrate on the climbs to keep from triggering PEMS (you don't want that out in the semi-wilderness). I had extra food and would take days off when I did trigger PEMS/go mildly hypoxic/lactic acidosis, whatever. Not fun, but boy was it a pristine place to take break days, in the perfectly gorgeous wilds (surrounded by interesting and talkative, friendly people. heaven).
In any case, on the AT it took so much discipline. I switched to keto after getting norovirus because why not on the momentum of not eating for several days, and some of the ridge runners helped me out as well (they are true trail angels I think). The keto really softened my PEMS a lot, I think basically by preventing the lactic acidosis spiral because...yay, no glycogen in the energy cycle anymore. That was my motivation/thought at least, and it did really pay off, it seems (for whatever reason!).
Pyruvate was my second best shot, it would really reverse a lot of problems to a manageable degree so I could do more basic stuff and focus on rest days, etc.
Eliminating free glutamates was _huge_ for me. Maybe not for everyone, but for me, absolutely. This is yeast extract, miso, soy sauce, hydrolyzed corn protein, anything that is umami basically is glutamate or glutamate-related in some form or fashion. For whatever reason, blood glutamate scavengers seem to be well-implicated in reducing symptoms of me/cfs quite well (and fatigue in general? i think?), this is not quite as well-known as I think it should be, but check the research out on that for yourself!
I'd have energy crashes after having, say, beef jerky (which already has glutamate, just competing with the other amino acids during breakdown), which often has tons of soy sauce or the like. Everything seemingly has MSG (or the equivalent), though they can legally lie if they put it in via a different source, apparently.
(Don't get me wrong, I love MSG. But it can make the lives of me and other people with fatigue stuff absolute freaking hell).
All that to say, niacinamide sorta waltzed up and smashed the delicate glass wall that I'd been balancing things around. I'm very grateful for it, it sorta feels like easy mode (minus all of the symptoms lol) compared to the other stuff.
Please feel free to ping me on twitter if you ever want to! <3 :'))))) Happy to chat further about this, and much love! Thank you so very much for your encouraging words, ME/CFS, long covid, post viral stuff is a hellhole of a syndrome as it basically feels like it sucks your soul out of you physically (experientially, at least, lol), and leaves you dead-alive. There is hope, and much CFS does not last forever! And even if it is there, I can assure you that there is a way to enjoy and love life, it just becomes much more of an inward and spiritual (if necessary regardless of the requiring circumstances) journey.
Sorry, that was a lot, I, er, maybe am recalibrating to my energy levels. Also, I'm very passionate about this particular topic! <3 :')))) :'))))) :'))))) :')))) <3
> Chess grandmasters spend hours sitting over game boards. And yet, high-level players lose 10 to 12 pounds on average over a 10-day tournament.
> He taps his foot gently to keep his alertness on the highest level while still not losing too much energy. He chews gum.
Sounds like the kind of behavior you'd expect when hopped up on something tbh
More like, at the bottom[1].
Remark: is it just me, or do other people too hesitate to click a youtube link with no title given?
I feel like I at least want to know the title of the linked video, even if it doesn't reveal much about the video.
IMO it'd be very nice if people made a habit of Ctrl+c/v'ing the title along with a yt link.
Title: Making Beads That Vibrate To Cheat In Chess
Length: 18min, 54s
Channel: MixMorris (102k subscribers)
17,364 views
Oct 23, 2022 #chess #engineering
Description: "This video speaks for itself." (sic)
For anyone unaware, this all stems from the allegations made against Hans Niemann last year:
https://www.npr.org/2023/09/26/1201734274/chess-hans-niemann...
Title: "I created the ultimate Chess Ai (it can cheat)"
The simple fact is that doing any kind of mindsport intensely over an extended period is very draining.
1. They're stressed and therefor eating less, especially if they're spending the daytimes of the tournament playing games - hardly conducive to appetite, and in fact I expect many will avoid food purposefully to try to not get that sleepy-full feeling.
2. To a much lesser degree, increased stress == increased heartrate == increased BMR.
3. Maybe, and I hate to speculate because of the stigma (personally I don't care if chess players are doing drugs), some amphetamine use, or at least caffeine, all of which can suppress appetate further.
I personally very much doubt that it's the thinking hard that's actually burning calories.
Unfortunately, I can't even read the linked post! It's paywall'd.
When you lose about 3500 calories of energy via this process, you have burned a pound of fat.
That doesn't really have anything to do with the conversation though.
From what I can tell, weight changes happen only partly due to CO2 exchange and partly due to rates of consumption and excretion.
The biophysical origin (I'm a biophysicist) of weight change as a function of energy use, eating and excretion is a bit more complicated than that.
Like you said, it’s a bit more complicated than that and every body is different. But burning roughly 3500 calories will result in the body weighing roughly 1lb less (accounting for food and water intake and loss).
If it didn’t work this way, every bodybuilder and fitness enthusiast on the planet would have a very different approach to their diet.
I can drop 10 pounds this week trivially by triggering a water flush (change in diet), essentially at will. Wife absolutely hates it, but that’s water weight.
I think of it as basically stealing energy or enthusiasm from the future, though. You might feel energized and focused now, but it comes at the expense of less energy and focus when the drug wears off. The withdrawal effect is pretty mild if you take prescription doses of it though, e.g. Adderall (which is amphetamine). At normal moderate doses, taken in the morning, almost all of that energy can be recouped during sleep (though not all). I wouldn't want to take it daily for a long period of time though, otherwise you'll build up an 'energy deficit' that could lead to a crash.
P.S. I know people who have essentially destroyed their lives by becoming addicted to amphetamine or meth. It's a dangerous drug.
I wonder if there is something about the dopamine issues of the ADHD brain that prevents an addiction to substances that aid it.
If a person already has good levels and healthy receptors, and they suddenly raise them too much, it just makes people obsessive and actually not focus well on the important task at hand.
It's a double-edged sword, always with warnings and side-effects.
If you don't, it's negatively impacting mental performance - but it's really good at helping you to deliver slightly subpar performance for grossly extended periods of time. (Common uses: Crisis situations where you cannot step away. Cramming for exams)
I suppose you could call this a different form of concentration, but AIUI it's more energy than concentration.
Interrupting my focus state with "why are you doing that?" - doing what?
As I'm getting older, the tip of the foot can start to get a little numb if I'm too excited.
I did eventually "break the habit"[1] by paying undue attention to my leg for years and intentionally stopping when it started. What I don't know is if it would have gone away on its own, or if my effort fixed things.
[1] It comes back when I'm unusually tired or stressed, though.
So you're kind of proving the parent poster's point, no?
Or are you suggesting caffeine is not stimulant or a psychoactive drug?
Also, the foot tapping behavior can be related to caffeine consumption even if you also do it when not taking caffeine. Some people (like me) metabolize caffeine a lot slower than average, so its effects last a lot longer (twice longer or so, I think). Also, caffeine notably causes sleep disruption. And caffeine withdrawal can also cause irritability.
Caffeine can also increase anxiety or anxiety-related behaviors, and even if anxiety or these behaviors are not exclusively experienced while taking caffeine, it can still increase the likelihood and magnitude of its effects. These behaviors can also persist in the absence of substance intake for a variety of (psychological) reasons.
A typical cup of coffee contains about the same proportion of caffeine compared to a lethal caffeine dose than the proportion of one Aderall dosage compared to a lethal amphetamine dose.
How about that?
It's a decent measure for how much a certain amount of a drug is likely to cause immediate important effects in the body.
LSD does cause significant psychoactive effects with one thousandth of that amount, which suggests that for a typical isolated dose, LSD is safer than caffeine and amphetamines. Not to mention that LSD is not as addictive.
But I don't think that invalidates my underlying point regarding caffeine, even if the lethal dose is not a perfect measure.
Of course there is, and it's obviously a positive correlation.
I think you just proved you don't understand what a correlation is...
“Overdose: There have been no documented fatal human overdoses from LSD”
https://en.m.wikipedia.org/wiki/LSD
Toxicity and psychoactivity are completely independent from one another. If you can’t understand that there’s not much else I can say to you.
If you wouldn't mind reviewing https://news.ycombinator.com/newsguidelines.html and taking the intended spirit of the site more to heart, we'd be grateful.
If thinking hard required a lot of energy, wouldn't we expect that thinking hard would cause an increased heart rate and faster breathing?
And anyway, the claim that chess players lose 1 pound per day does not pass a basic sanity check. 1 pound of fat = 3500 calories. If you raised all that energy instantaneously in the brain, it would raise brain temperature by around 2500 C (the average brain weighs ~1.5 kg and the brain is mostly water so I figure 1 Calorie ~= 1 degree C per kg). Obviously the energy doesn't release all at once and it wouldn't all be released by the brain, but that's still an implausibly high energy expenditure.
[1] https://pubmed.ncbi.nlm.nih.gov/18987876/
[2] When I said "this is not true", I was thinking of the claim from the linked article that chess players burn 6000 calories per day, which is definitely false. Upon re-reading, I realized the parent comment did not actually make this claim. I am agnostic as to whether chess players lose 1 pound per day during tournaments, but if they do, it's definitely not because they're burning 1 extra pound of fat. It's plausible that they're eating much less and/or losing water weight.
As per usual, this claim has been repeated all over sports/medicine journalism with improper attribution and no mention of the caveats.
Some high level players like Sam Shankland are known to frequently cite physical fitness as crucial to their ability to perform in high level tournaments, where they might play that type of intense games all day for multiple days in a row.
(https://www.milibrary.org/tuesday-night-marathon, though I'm not playing the currently running one. You typically play just one game every Tuesday night for 10+ weeks in a row)
I keep forgetting which one
I didn't read the original story but I wonder if it included that little gem
The conclusion: Pushing brain to its limit requires a lot of energy.
https://www.reddit.com/r/todayilearned/comments/17ms04d/til_...
(I'm not going to pay 30 bucks to read the article, so it may answer that question)
This is torture
After six hours, I wish the study would've differentiated between "tired" and "murderously enraged"
Some of the rules that would sometime appear that I can recall
* Put 1 or 2 jokers in. Jokers are slappable
* Doubles are slappable (3, 3)
* Three (or four) face cards are slappable
* Three (or four) cards of the same suite are slappable
* Three (or four) consecutive cards are slappable (2, 3, 4, 5) or (5, 4, 3, 2)
* A player without cards can 'slap in'
I would like to ask everyone to stop for a moment and think if in their line of work they are required to perform tasks like this. Your job might be even shittier than you currently feel like it is
Doing hours of arithmetic homework as a child didn't give me that reward signal, so for me that was torture back then.
https://github.com/zulln/misc/tree/master/lettergame https://zulln.se/misc/lettergame/
[1] https://www.espn.com/espn/story/_/id/27593253/why-grandmaste...
> Meanwhile, players also eat less during tournaments, simply because they don't have the time or the appetite. "The simple explanation is when they're thinking about chess, they're not thinking about food," says Ewan C. McNay, assistant professor of psychology in the behavioral neuroscience program at the University of Albany.
That seems far more likely. I'm sure many of us can relate to working through lunch when we have an intense deadline, and not even realizing we're hungry until hours later.
> According to Ashley, India's first grandmaster, Viswanathan Anand, does two hours of cardio each night to tire himself out so he doesn't dream about chess; Kasimdzhanov drinks tea only during tournaments and plays tennis and basketball every day. Chirila does at least an hour of cardio and an hour of weights to build muscle mass before tournaments.
And apparently they're exercising quite a lot as well.
This hardly seems to support that it's just brain power. And my recollection is that focus does not significantly increase glucose uptake in the brain - though stress can obviously increase heart rate, but that's separate, one can focus without being stressed.
so no.
think of it like a computer, drawing more electricity faster won’t help the physical properties of the RAM or transport bus (much). it already has enough of that, the bottleneck is elsewhere. but good breathing does help cognition
compared to muscles the brain is a small surface area with a wide bus. when exercising, the demands are about getting more oxygen to more muscles, which is merely transported by blood, and the heart beats faster to pump blood faster, the breathing is an attempt to oxygenate more blood. thats the difference between muscular activity and brain activity
HF, HCl, and H2SO4, to name a few acids, do not "require" low pH, they BYOpH
Also, if I don't eat enough food, I feel tired throughout the day as well. It makes me feel like I can't focus or think, but then I'm fine after I eat. Maybe it's because I'm skinny.
Just don’t tell Steve Lukather, somehow he never stops touring. Totolly badass.