A new study hopes to determine the exact link.
So here's the big idea I think will shape 2016: sleep. That's right, sleep! How much and how well we sleep in the coming year -- and the years to follow -- will determine, in no small measure, our ability to address and solve the problems we're facing as individuals and as a society.
Dreams *do* come true. Especially when you're a dog.
During REM sleep, brain activity looks very similar to wakefulness, Gehrman explains, earning the nickname of "paradoxical