On average, we spend one third of our lives sleeping. Thats about 24 years worth of sleep for one 80 year old man or woman. 827 more words
Tags » Slow-wave Sleep
HuffPost has an interesting Sleep 101 article up.
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Sleep is anything but a waste of time. While many people think of catching ZZs as the body “shutting off” until morning, nodding off actually activates a complicated process that helps you feel rested and healthy the next day.