I can tell if I've slept less than 8 hours; I can barely function with anything less than 7; add 30-60 minutes if I've exercised intensely the previous day. Th

I can tell if I've slept less than 8 hours; I can barely function with anything less than 7; add 30-60 minutes if I've exercised intensely the previous day. The report makes it seem like even if people don't realize it, their performance suffers. I've always been jealous of those that could seemingly sleep for however much time was convenient but not anymore!