It's absolutely anecdotal. It doesn't stop being anecdotal just because there are a lot of anecdotes! whule it's generally obvious that sleep makes you feel be

It's absolutely anecdotal. It doesn't stop being anecdotal just because there are a lot of anecdotes! whule it's generally obvious that sleep makes you feel better, what's less obvious is that sleep deprivation an reduce immune activity when other factors are accounted for. Now we know, and that's good!