結果 : stages of sleep deprivation by hour
4:50

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Dr. Matt Walker: The Science & Practice of Perfecting Your Sleep

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31:46

Sleep Deprivation Effects

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How lack of sleep affects health and tips for a good night's rest

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Sleep Series-What Is Adequate Sleep? (Apart from OSA Rx) Does It Benefit CV Health?

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Sleep Deprivation and its Weird Effects on the Mind and Body

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Sleep stages and circadian rhythms | Processing the Environment | MCAT | Khan Academy

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12:54

What Would Happen if You Only Got 5 Hours of Sleep Per Night - NOT GOOD!

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