Most adults: Need 7.5 to 8 hours of sleep per night (some a little more, and some a little less). Go to bed earlier enough to insure that you get enough sleep. Retire ; rise same time each day. Keep bedroom dark ; cool ; use only for sex ; sleep. Turn off tv. No naps. Exercise regularly but not in late evening. No caffeine for 6 hrs ; no alcohol or tobacco w/i 2 hrs of sleep. Keep dinner moderate sized ; >.
Answered 12/5/2013
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Variable: Growing or active kids with sports or heavy study schedules need a minimum of 9 hours. After growth stops and schedule lessens, most can get by on 8, some adults 6-7. Memory difficulty, diminished work or physical performance or drowsy periods during the day suggest the need for more sleep. Bedtime is based on lifestyle and schedule.A shift worker is different from a daily worker.
Answered 6/13/2014
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