In high school, this is probably what it was. My body wanted to fall asleep well after hours due to timing but I still had to get up at 7am for school. Being s

In high school, this is probably what it was. My body wanted to fall asleep well after hours due to timing but I still had to get up at 7am for school. Being shorted on sleep sucks. My current adult strategy is to simply plan for 7.5 hours of sleep each night; this gets me well rested consistently and doesn't appear to have any negative side effects. So long as I get the sleep in at some point, it doesn't seem to matter all that much when in the day it is. I could shift to mornings (and worked retail this way for years), but it's harder to maintain; 2am just feels "normal" to me. So, given the choice, I'll start the day later and wake up rested.