> For example, the point that you linked to says that the official recommendations on sleep are "7 to 9 hours", which Walker simplified to "an average of 8 hour

> For example, the point that you linked to says that the official recommendations on sleep are "7 to 9 hours", which Walker simplified to "an average of 8 hours". I don't see how this simplification is so bad The simplification is no bad, most people need those hours for day to day. But there was a fair point made, within the nonsense, not everyone is the same. I, hand on heart, know people who can roll on 3-4 hours sleep over the course of 4 months, fully aware and capable, there are those who are trained for it also, so outside the natural feeling to sleep, it can be (to an extent) manipulated. > Here it's claimed that sleep deprivation is actually a good thing, because it can be used as a temporary treatment for severe depression As an option its a super super quick temporary solution, just because your body and mind is working on other things. It's not a treatment at all, just a distraction, like drinking, so I agree with you there and I think its bad advise to promote such, same way as drinking.. If you have any emotional issues, talk to a professional, not HN. - And no I'm not talking to OP or anyone directly, just in general (I been there!)