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zten

343 karma · joined October 2, 2014

I do some stuff.
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zten··on Class-Divided Cities: San Francisco Edition
What's the issue with having roommates and not permanently occupying a parking spot?
zten··on AWS Application Load Balancer
IPv4 traffic over IPv6 is permitted, though. They just want you to use APIs that work independently of the underlying decision to use IPv4 or IPv6.
zten··on Ask HN: Planning to leave. How best to handle stock options?
Isn't the problem that there is no $5MM payout? After paying a few tens of thousands for the below-market-price shares, you're the new owner of some shiny private shares, for which there is probably no market. In the future event of an acquisition or public offering, there's a chance of a payday.
zten··on San Francisco May Let Bicyclists Yield at Stop Signs
They're definitely not thinking of city driving. Suburbs, maybe. They might be thinking of roads like Highway 1 in Pacifica and north of Stinson Beach. Stretches will have a 50mph speed limit, a narrow shoulder, and a grade that will drop many cyclists to 15mph or lower.
zten··on Camera Restricta: A disobedient tool for taking unique photographs
The point is explained in the article. It's a protest of (now failed) legislation restricting photography of copyrighted public works. It uses the number of photographs taken in the immediate area as a proxy for the likelihood that something in the frame is a popular, publicly available copyrighted work.
zten··on Show HN: Make a programmable mirror
I'd suggest finding glass instead of plastic if you can deal with the weight in order to avoid having a distorted reflection. It should also be cheaper -- it looks like they're charging $33 per square foot for 3/16" plastic.
zten··on Nike Missile Sites of the San Francisco Bay Area
Never mind making it up the hill -- the backside descent of Conzelman Road is really what your average person should skip. You'll miss out on some of the old structures by skipping that, but there's still things to see if you go down Alexander, take the tunnel to Bunker Rd, and follow that out.
zten··on The Invisible Hand of Super Metroid
If someone was as bomb-happy as I was when exploring, the game would tell you a super missile is required to proceed when a bomb explodes. Bombed blocks change to show what smashes them.
zten··on World’s First Connected Bike Grips
Suburbia definitely contributes to this problem with large multi-lane roads, hostile to both cyclists and pedestrians alike. A lot of their cycling projects also seem to be focused on multi-use paths, which are unlikely to bring up the count of commuter cyclists. They're poor to use as transportation or training options, which often leaves suburban drivers confused or frustrated when "there's a perfectly good path for you over there."
zten··on How My Employer Put the “FML” in FMLA
I have to use PTO for sick days in SF. Oops.
zten··on How Exercise May Protect Against Depression
I agree that interval training is the way to go here, but it's definitely more nuanced than only targeting VO2max in zone 4. I'm going to talk from the perspective of cycling. This image is a reproduction of a chart from "Training and Racing with a Power Meter": http://lh4.ggpht.com/-bEo_kR-QvlM/UtSoVtZ1PlI/AAAAAAAAC2s/Q9...

You'll get some benefit across almost the entire spectrum almost no matter where you are focusing your efforts. You only see this diverge at the extremes: too easy, and you're just recovering; too hard, and you're only optimizing the systems that allow you to go really hard.

For some reason when I think of HIIT I picture people as trying to do Tabata intervals and you can see from that chart that you sort of run into a problem: you get the same level of benefit as if you just went slowly for a long time (this part is key -- the chart doesn't highlight how long you should expect to spend in the zone to get the benefit, whereas the training plans in the book make it clear that they expect you to sit in zone 2 for 2-4 hours at a stretch. Compare that to the 3-8 minute VO2max intervals for 3-6 repetitions.), while only really optimizing your ability to endure future Tabata intervals.

The real reason to be concerned with any of this at all is to focus your training and build up the appropriate ability without injuring yourself and without hampering your training down the road. Based on the previous chart, it seems like Z4 and Z5 have the most number of pluses, but they also build up the most damage as they are physically and mentally taxing -- you'll build training plans around 3-20 minute intervals in those zones instead, and fill in the gaps with Z2 work or rest.

If you're time-crunched, you may do abbreviated intervals at Z5, decrease the time you spend at Z2, and shift some of your training effort into Z3 instead. But Z3 starts to get hard enough where it impacts your recovery without giving you the most desirable adaptations. The ideal thing to do here is to increase your training time so you can spend more time in Z2, but we don't all have that luxury, unfortunately.

zten··on How Exercise May Protect Against Depression
Zone 2 in many training models is typically called the "endurance" zone. It represents the level of effort where you could do something for hours at a time. It is typically defined in terms of heart rate (beats per minute), running pace (minutes / distance), swimming pace (minutes / distance), or cycling power (watts). Usually you'll see something between five and seven zones defined, ranging from an active recovery effort (zone 1) all the way up to a zone for training anaerobic strength.
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