> Some people claim that this is purely psychological and that you can train yourself to get by on four hours a night, but this has never worked for me. I’m making the weaker claim: there is a big difference between 7 hours and 9 hours, you can do a lot with those 2 hours, and often if you’re a 9 hour sleeper you can become a 7 hour sleeper, which will end up compounding if you use those extra 2 hours well. [2] So it’s worth adopting the resolution to sleep less than you want to.
My SO would be horrified; I say something to this effect every night as I squeeze in "one more thing" after work, feeling that I need this time if my projects aren't going to stall between my days off, but I know they don't handle our sleep schedule as well as I do and that I ought to be more considerate-- perhaps for my own good as well.