Your bones constantly rebuild themselves.

Blood makes up about 7% of a person's body weight.

Fact #3506 · Human Body

Humans are the only primates with whites (sclerae) visible in their eyes, which helps with social communication.

Fact #3287 · Human Body

The small intestine is about 20 feet long despite being called 'small' — the name refers to its width.

Fact #3499 · Human Body

The human stomach can expand significantly after a large meal.

Fact #101 · Human Body

Your brain builds awareness.

Fact #2395 · Human Body

The liver is the only human organ that can fully regenerate itself.

Fact #2587 · Human Body

The human body has over 600 muscles.

Fact #160 · Human Body

The human heart beats over 100,000 times per day on average.

Fact #22 · Human Body