Stress hormones prepare the body for a fight-or-flight response.

Your brain fills in your blind spot so you never see it.

Fact #3044 · Human Body

The human skeleton renews itself over time.

Fact #133 · Human Body

Stomach acid is strong enough to dissolve razor blades.

Fact #3267 · Human Body

There are more bacteria in your body than human cells.

Fact #2448 · Human Body

Your liver can regenerate itself from as little as 25% of its original tissue.

Fact #3494 · Human Body

Your bones are roughly five times stronger than steel by weight.

Fact #3503 · Human Body

The human heart pumps blood through the circulatory system.

Fact #99 · Human Body

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

Fact #1918 · Human Body