Why do we sleep? Scientists find brain repair mechanism
Sleep is an important part of the daily life cycle of most animals — including humans. But when an animal sleeps, it leaves itself defenseless in the face of danger. So, what makes sleeping so important that we all take this risk? Research, both old and new, acknowledges that sleep plays an important role in all aspects of our health. Recent studies we've covered have found that a good night's sleep can support vascular health.