Bump this post up as I was just thinking of this yesterday after hearing that cortisol is negatively affected with less than 5 hours AND, more than 8 hours in adults, but I can only imagine this is an average and cannot be right for most....
Needless to say my life has a sh*t ton of stress, and go, go, go if I am waking up as I should be then I am up no later than 3:15 to hit the gym, and struggle to get to bed by 8, usually though its 8:30 at the very earliest that I'm closing my eyes, and I bounce from falling asleep to being wide awake for 30-60 minutes...sometimes later/longer, seems any little thing completely revs me, and relaxing takes absolute discipline for me....I take supps for sleeping when I can remember to get them in my belly by 7pm, or there are no questions, I WILL sleep through my alarm, and that screws everything up!
It doesn't really matter if I've gotten 5 or 7 hours of sleep, I still am absolutely exhausted come the weekend, and prrobably take a full day of doing nothing but the gym every other week, which I hate, makes me feel like I've had no weekend at all..and come vacation time its SLEEP, 10 PLUS HOURS A DAY.... if sleep is really really poor and I really need some serious recovery I will pin a few iu's gh before bed, and take melatonin(10mg, double release) zma, and phenibut, a sure fire way to make 7-8hrs feel like 24 for me....with these kind of recovery. "Days" I do ok....though I'm not sure if I would benefit from any more...I dealt with "insomnia" through highschool, and was told my natty circadian rythym was wanting to sleep from 2am, to 2pm....but that didn't work with school, and I know I still tend this way, and the melatonin helps, but even with it come weekends. Its tough to keep on the same schedule, I much prefer 11 pm to 9am , but the not being rigid within a few hours resets back to that later schedule every time....so yep I'm working on it, but sleep I would say is my biggest struggle, and all this doesn't take into acct when/if I dream, I suffered from night terrors as a kid, and still control my dreams 95% of the time (and when I don't its a bad night terror I'm having, which is 1000x worse) and so I am more exhausted upon waking then I was going to sleep...