The best idea is to have a regular sleep schedule. You could be fine for 5 days on 4.5 hours sleep, but eventually your body will respond, and even with a night of 9 hours sleep, you will be tired as it is showing the effects of only 4.5 hours sleep for several days. Ideally, try to get 7-8 hours of sleep every night AND go to bed/wake up at the same time. This is the hardest part for college students and others with irregular schedules. You will find out that when you have a schedule, you won't even need an alarm clock and your body will naturally awake at the same time every day!
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Brian Griffin: Ah, if my memory serves me, this is the physics department.
Chris Griffin: That would explain all the gravity.
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