The average human digestive tract is about 9 meters long — food takes 24–72 hours to pass through completely.

There are more bacteria in your body than human cells.

Fact #2448 · Human Body

The human brain consumes roughly the same power as a small light bulb.

Fact #2456 · Human Body

Humans can adapt to high altitudes over time.

Fact #3079 · Human Body

Your brain edits out constant sensations like clothing touching your skin.

Fact #3048 · Human Body

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

Fact #1991 · Human Body

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

Fact #2674 · Human Body

The human eye blinks about 15 times per minute.

Fact #2658 · Human Body

The average person produces about 1–2 liters of saliva per day.

Fact #3288 · Human Body