Babies have around 300 bones; adults only have 206 — many fuse together during childhood.

Horses cannot breathe through their mouths — they are obligate nasal breathers.

Fact #3245 · Human Body

The human eye adapts to darkness by increasing light sensitivity.

Fact #899 · Human Body

The human body can survive about 3 days without water.

Fact #3064 · Human Body

The average adult human has 32 teeth.

Fact #152 · Human Body

Your brain generates signals.

Fact #2411 · Human Body

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

Fact #2674 · Human Body

Red blood cells complete a full circuit of the body in about 20 seconds.

Fact #3272 · Human Body

Teeth are the only part of the human body that cannot repair themselves.

Fact #3509 · Human Body