The Science Of Sleep - By Jeff Iliff on TED

"When you sleep it clears your mind, when you don't sleep it leaves you murky"

This is a fascinating find. A TED Talk by neuroscientist Jeff Iliff, which looks into the science of sleep and is entitled "One more reason to get a good night's sleep", explaining how the brain functions and how important sleep is in the process of "cleaning" the brain.

The brain uses a quarter of our energy supply, but it accounts for only about 2% of the mass of the body. New research suggests that sleep plays a key role in feeding and relieving this most important organ with its vital nutrients.