According to World Sleep Day statistics , sleep deprivation is threatening the health of up to 45% of the global population. Your arm and leg muscles are temporarily paralyzed during REM sleep, so you can't act out your dreams and injure yourself. Another important stage of sleep is deep sleep, when your brain waves slow into what is called delta waves or slow-wave sleep. "That controls all the hormones of the body, body temperature, eating and digestion, and sleep-wake cycles." "Resist the temptation to snooze, because unfortunately, your body will go back to sleep -- a very light, low-quality sleep," Robbins said.

Source: CNN April 16, 2019 07:52 UTC