You need more: Most of the people need 7-8 hours of sleep to feel refreshed and rested during the daytime, however, some people are short sleeper and need only 5-6 hours of sleep and some people are longer sleeper and need 9-10 hours of sleep to feel refreshed during the daytime, therefore if you feel rested with 5 hours of sleep, it should not be any problem.
Answered 10/23/2014
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