Depends: That depends upon what pattern you have had and how you are changing it. Everyone needs 8-10 hours of sleep. Some people can get by on 6, but any less than that is not enough. It is best to sleep on a consistent pattern as far as time of going to sleep and awakening. If you take daytime naps you may have trouble falling asleep at night. I hope this answers your question. If not be more specific
Answered 11/19/2014
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