Researchers do not know exactly why humans need sleep, but they do know that it is an essential part of life. Missing even a few hours of sleep can affect your emotional well being. Studies in rats have shown that sleep deprivation can actually kill.

We all have the occasional night when we can’t seem to fall asleep. For many it lasts no longer than one or two nights, then regular sleep habits return, but for some the challenge to getting proper rest develops into something more. Insomnia is the inability to fall and/or to remain asleep for reasonable periods of time, and many people suffer from it one way or another.

Sleeping more can help you lose weight. This doesn’t mean you can sleep on the couch for hours on end. But research shows that sleep deprivation can cause hormonal and metabolic changes that can lead to weight gain. Plus, when you’re feeling sluggish, you’re more likely to crave more fuel and increase your empty calorie intake with items like chips or cookies..