There's nothing better for you to do for yourself than to eat healthy meals, snacks, and get 10 hours of sleep a night. Sleep deprivation, as well as failing to fuel your body properly will put you right where you appear to be.

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Age group Recommended amount of sleep Infants 9-10 hours at night, plus 3 or more hours of naps Toddlers 9-10 hours at night, plus 2-3 hours of naps School-age 9-11 hours Adults 7-8 hours
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mayo clinic