How I'm loosing 20 kilos in 60 days.

20 kilos is 44 pounds. 60 days is is 8.5 weeks.

That's 44/8.5 = just over 5lb of weight loss targeted for each week.

Now that I've double checked my math and seen that the number I got before I started writing this comment was correct, I can tell you (or, your friend since it's not your website) that unless you are severely obese, this is a terrible terrible idea and an unreachable goal unless you want to get very sick.

Before I get into the numbers I think you should go by, let me give some information: I recently moved the entire width of the United States and started working as a software engineer at a fitness company, I've gotten really into the science behind weight loss and weight training and have gotten much stronger than I used to be while also losing 30+ pounds in three months.

From the numerous papers I've read and the experiences of the tons of people on our social network who have changed their life around completely, I can tell you that attempting to lose more than 2 pounds (around 1 kilo) a week is a terrible goal. Even if you hit it, you'll be severely underfed and feel like shit.

For your first week or two you might lose much more than that because of water weight which might make you think I'm wrong, but you shouldn't be setting insane goals like this for yourself because they'll hurt you both physically and emotionally if you follow through.

Weight loss is nothing but calories in - calories out, and making that a net negative. Use this calculator to calculate your TDEE http://www.1percentedge.com/ifcalc/ (on page 2) and then count your calories and eat 500-1000 calories less than a day. Eating at a deficit of 1000 calories is really drastic and I can't maintain it on most days, so try to aim for somewhere between 500-750. A pound is 3500 calories so being at a daily deficit of 500 calories will net you one pound of weight loss a week.

If you're feeling adventurous, go to the next page in that calculator and follow its intermittent fasting macro calculations (which will make you count your fat, protein, and carbs rather than just your calories) and incorporate a simple three times a week weight-training routine. That will help you emotionally because you'll be able to eat more on workout days and also make you stronger, and convert some of your fat into muscle.

I have been dieting for months. I am an average male, 220lbs 6'3" and I can say that he will have a very hard time as he continues this trend. By all means willpower can overcome how he feels, but the amount of calories he needs to sustain that kind of weight loss will leave him drawn out. Extremely drawn out, to the point he feels like he is starving when waking up. I hope he can do it, but at the same time he should reconsider his time table. In pounds that is about .7 pounds a day. That is an incredible amount of weight to sustain losing. He also mentions beginning working out. This is also a problem, since once he begins working out (since he hasn't been) he will immediately get weight gain from muscle production. This will hinder his ability to lose the weight. I always suggest that people chose a diet or work out routine, but not both. Then as one of the two is going along, and the willpower is there to sustain it slowly start doing the alternative. Most people when they do both, feel like they are taking a crash course, their body works different while working out, feels starved because of the diet, and ends up breaking them down. Doing one and moving to the other help to balance the changes. I am hoping for him though.

I only scanned the page admittedly (down to day 4) so I might be missing something, but people should really look into integrating healthy practices into their lifestyle as opposed to seeking drastic, often short-term change. For me it’s been to have a more protein centric diet, which I've been able to adhere to long-term because I enjoy it. I only eat good quality meat (beef eye fillets, lamb racks/shanks, fresh fish like barramundi and snapper etc) which means I don't become fatigued by my limited choices. And I do a 5 minute exercise routine each day so that I have no excuse for skipping a day (high-intensity low-rep dumb-bell exercises - increasing the weight over time). I'm looking into getting a kettle-bell to mix things up, but intend to keep my daily routine at 5 very achievable minutes.

Another important aspect is understanding how carbohydrates, fats and proteins are metabolised. Merely understanding these things allows you to make informed choices. I've watched co-workers pain over their shabby appearance while slamming down an oversized cup of liquid fructose (juice) without thinking about it. Try drinking water - get rid of your naturally/unnaturally sweetened drinks and just sip water or green tea throughout the day. Need a coffee in the morning? Fine, get it out of the way and then make yourself a pot of tea and a tall glass of water for the remainder of the day. Make these things habits - not band aids. Focus on achievable lifestyle changes that you can maintain.

Lastly, look into supplements – but don’t use them as a crutch. Some of the ones I’ve experimented with are L-Tyrosine, 5HTP, 7-KETO, low-dose Aspirin, Nicotinamide (B3), Melatonin, Creatine, D3, Beta-Glucan and a few others that don’t spring to mind. The ones I tend to use are more for neurotransmitter support/mental health, but there are some that can help speed up your BMR and RMR if you need that slight edge off the block (eg 7-KETO).

I'll admit I skimmed through his blog, so I could be missing his magic ingredient. But I see he isn't fasting and he is introducing? light cardio?

20kg in 60 days, what is that, 1kg every 3 days. Assuming fat loss primarily, 1kg = ~7000kcal.

7000/3 = 2333kcal a day deficit. Assuming a fairly sedentary behaviour, but ignoring his excess weights effect on his metabolism. He is going to be a few hundred calories away from pure starvation.

500kcal a day max is what he could be eating to sustain that sort of progression. And this is assuming a decent metabolism and a little activity.

You can't sustain this, and introducing exercise of sufficient intensity (I burn ~3200kcal a day, so about my level) to maintain that deficit while eating say 1000kcal a day, is just ridiculous. You'll be burning through muscle tissue like its candy.

This is not a good idea, and for so so many reasons. All you'll end up with is a bag of skin and bones.

Heh. Didn't expect to see comments here. My mate isn't starving himself and isn't going to kill himself if he doesn't actually loose that much - the number was just a goal, something to motivate. If you read the entries you'll see that he's simply eating healthier, and doing more exercise. The main idea is to inspire others to do the same, not to get sick from undernourishment.

As others have said, this gradient of weight loss is a terrible idea.

More generally, though, it seems that there are enough people doing diets that instead of reading articles about how someone thinks that they're going to lose weight, we could just wait for someone to actually lose a lot of weight, and then read a post that talks about how they did it, no?

Have you watched "Fat, Sick and Nearly Dead"?

Joe Cross lost 60 lbs (IIRC) in 60 days, by juice fasting.

I lost 27 lbs juice fasting in about 30 days. I didn't full juice fast. I still had an evening meal a fair number of nights.

Disclaimer: This isn't actually my website, but a close friend's. "How my friend is loosing 20 kilos in 60 days" just wasn't quite as concise.

Good luck (to your mate), thats a big amount to lose in 2 months.