Are you a heavy sleeper? Well, chances are, your brain is working hard while you're at rest!
A baby's weight doesn't really change when they fall asleep, so why does the limp, floppy weight of a sleeping baby seem greater than it actually is?
How much sleep are you really getting? It may be even less than you think.
Nestled in your brain is a biological clock that matches the 24 hour clock of a day. However, they may be another clock. Learn more on this Moment of Science.
Do earwigs really burrow into your ears while you're sleeping, only to later feast on your brain? Find out on this Moment of Science.