Acetylcholine is the neurotransmitter responsible for muscle movement — blocking it causes paralysis.

The human eye blinks about 15 times per minute.

Fact #2658 · Human Body

There are people alive today whose hearts have stopped for hours and were restarted.

Fact #2226 · Human Body

Your mind exists inside your brain.

Fact #2303 · Human Body

Your stomach gets a new lining every three to four days because the acid would otherwise digest itself.

Fact #3491 · Human Body

The human body produces heat through metabolism.

Fact #116 · Human Body

Your brain filters most sensory input.

Fact #2354 · Human Body

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

Fact #1798 · Human Body

The human body generates electricity.

Fact #2662 · Human Body