Sperm cells are the smallest cells in the human body.

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

Fact #2106 · Human Body

The human brain contains billions of neurons involved in thinking.

Fact #2983 · Human Body

There are more bacteria in your body than human cells.

Fact #2448 · Human Body

The brain consumes a significant portion of the body's energy.

Fact #967 · Human Body

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

Fact #3275 · Human Body

Humans are the only animals with chins — no other primate or mammal has one.

Fact #3502 · Human Body

The human body replaces many of its cells regularly.

Fact #182 · Human Body

Earwax has antibacterial properties and helps protect the ear canal.

Fact #3289 · Human Body