Question

Why do we sleep only during night and why not at day time

Answer 1

Sleeping late on weekends, and/or taking long naps during the day, may give people with DSPD relief from daytime sleepiness but may also perpetuate the late sleep phase. People with DSPD can be called "night owls". They feel most alert and say they function best and are most creative in the evening and at night

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