I don't get a lot of sleep, I know I know---it's good for your health, your looks, your weight....blah blah blah. All of those things seem to be doing fine for me, and ever since I can remember since I was teenager, I've slept anywhere from 4-7 hours most nights (6-7 always seems to feel best--when I get more than that I feel groggy all day) with an occasional 9 or 10 hour night when I'm completely exhausted after a trip or something, but I (completely exhausted) decided to give it a try!
I was able to do this experiment Friday, Saturday and Sunday. No alarm clock. No one to wake me. Phone turned off.
Friday night I slept 10 hours! Whoa--I was tired!
Saturday night 6 hours of sleep followed.
Sunday night I had a total of 7 hours of sleep.
So, apparently, the optimal number of hours my body needs is 7 hours.
I'll do my best to cut back on those 4-5 hour nights, but no guarantees...I like being up and awake and doing things...