No caffeine\supplements (2-4 weeks off to account for any withdrawal effects) or knowing friends who are also up late, I default to 10 hours of sleep and am als

No caffeine\supplements (2-4 weeks off to account for any withdrawal effects) or knowing friends who are also up late, I default to 10 hours of sleep and am also less productive. [If you want to live an Erdos lifestyle, I imagine you can maintain late night productivity very late in life with only slight, completely-unavoidable age related decline. While this lifestyle is socially expected of college age students or the norm, it's socially discouraged and deviant for older Americans ... I think social causations should be slightly more heavily weighted than an age based causations]