Have you ever been drifting off to sleep when suddenly you hear what sounds like a gunshot, a door slamming, or an explosion ...

Add Yahoo as a preferred source to see more of our stories on Google. We really do 'fall' asleep, a new study shows. Far from gently drifting off, the brain rapidly transitions into sleep after ...

Why do we lose our balance as we age? New research shows that Parkinson's and aging cause the brain to over-engage during balance recovery, leading to muscle stiffness and increased fall risk. Learn ...

As people drift into sleep, their brains do not shut down all at once. Instead, different brain regions change their activity and energy use at different times and in distinct ways. A new study ...