Humans begin developing a sense of smell at 8 weeks in the womb — it's one of the first senses to develop.

Your brain can recognize a familiar face in less than half a second.

Fact #2674 · Human Body

Every second, your body produces millions of new cells.

Fact #2703 · Human Body

The human nervous system can transmit signals faster than a Formula One car.

Fact #2461 · Human Body

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

Fact #1873 · Human Body

There are more bacteria in your body than human cells.

Fact #2626 · Human Body

Your stomach lining replaces itself every few days.

Fact #2645 · Human Body

Your brain senses reality.

Fact #2325 · Human Body

The human heart beats about 100,000 times per day and around 2.5 billion times in a lifetime.

Fact #3504 · Human Body