Babies are born with about 300 bones, but adults have only 206 because many fuse together during growth.

Goosebumps are a vestigial reflex from when human ancestors had more body hair to keep them warm.

Fact #3283 · Human Body

Your brain can store the equivalent of millions of gigabytes of information.

Fact #1736 · Human Body

Your body produces about 300 billion new cells every day.

Fact #2463 · Human Body

The human eye adapts to darkness by increasing light sensitivity.

Fact #899 · Human Body

The human body is about 60% water.

Fact #45 · Human Body

Your corneas receive no blood supply — they get oxygen directly from the air.

Fact #3275 · Human Body

The cornea of the eye has no blood vessels — it gets oxygen directly from the air.

Fact #3497 · Human Body

Your bones constantly rebuild themselves.

Fact #2472 · Human Body