How many hours of sleep, in a row do people need to get the "restful/good" kind?
how many hours does the average person have to sleep to get the good, healthful kind of sleep? if one sleeps 3 hours 3 times a day is that good? or does one have to get 9 hours straight for it to count? what is the magic number of hours for it to be beneficial for one? in general, not just whats ok for you