You can "cheat" on the amount of sleep you get.
Sleep experts say that most adults need between seven and nine hours of sleep each night for optimum performance, health, and safety.
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Yawning means laziness, sleepiness and boredom
If you wake up in the middle of the night, it is best to lie in bed trying to fa...
During sleep, your brain rests.
Daytime sleepiness always means a person is not getting enough sleep.
Insomnia is characterized only by difficulty falling asleep.