Maybe it's just me, but I'm always leery of any advice that involves not getting a good night's sleep. There are some things you're better off not trying to hack. Much evidence suggests your sleep cycle is one of them.
I'm not advocating not getting a good night's sleep. In fact, my article doesn't even talk about whether you should implement monophasic, or biphasic, or polyphasic sleep, or some other creative variant. This article is about how to nap, not whether you should nap or at what time of the day you should nap (and whether you should let it affect your sleep).
Yeah, at most this seems like something to use occasionally, to be more alert despite being sleep-deprived. Possibly an alternative to just piling on caffeine. But I would definitely not read it as a technique for reducing the amount of sleep you "need", since sleep is a lot more than simply a thing that decrements your drowsiness meter. Twenty-minute power naps don't do fun things like memory consolidation, for example.
