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So there you lay, awake, after only three or four hours of sleep. You worry, you toss and turn, finally you go back to sleep, but you know something is wrong with you. Is it?
Segmented sleep , also known as divided sleep , bimodal sleep pattern , or interrupted sleep , is a polyphasic or biphasic sleep pattern where two or more periods of sleep are punctuated by a period of wakefulness. Along with a nap ( siesta ) in the day, it has been argued that this is the natural pattern of human sleep. [ 1 ] [ 2 ] A case has been made that maintaining such a sleep pattern may be important in regulating stress. [ 3 ] Historian A.