What is the least amount of sleep you are able to function well on?

six

2

4

4

5

5 1/2

About 4 hours of sleep is the least amount I can function on.

3 hours... it's so easy; just needs some practice ;) and knowledge what to do to keep body alive...

healthy, warm food, tea and moment of relax should keep you awake. No alcohol, no drugs or smokes; "cleaning up" your organism from toxins takes away energy we have so little of :P

Sleep always at the exactly same hours (best around 3-5 AM, that's when the body sleeps "the strongest"), that tells your brain to fall asleep as fast as possible; also (if you sleep on the back), turn your eyes upwards (toward your forehead) - that's their natural position while you're asleep.

4 hours

they're each and all of the time. The earth is flat, optimistically, the place you're attempting to land a airplane. people who land in hills have greater issues whether they understand astronomy. would not want a biology instructor to appreciate plenty approximately Noah's animals, or could you? Believing smoking heals maximum cancers is now being taught at what faith? it is your occasion of something equivalent to a spiritual perception? What if somebody (like Hitler) firmly believed in evolution and grew to alter right into a protection rigidity chief and killed 10 million human beings, could we discriminate against evolutionists being on top of issues of totalitarian states?

If it's just one night, I can do with none at all. But if I get less than 5 hours for a few nights in a row, I am really feeling it. I do best with 6+ hours.