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

The human heart beats over 100,000 times per day on average.

Fact #22 · Human Body

Stomach acid is strong enough to dissolve razor blades.

Fact #3267 · Human Body

Only about 5% of people have detached retinas in their lifetime.

Fact #2878 · Human Body

Your brain fills in blind spots in your vision automatically.

Fact #2740 · Human Body

The human heart pumps blood through the circulatory system.

Fact #99 · Human Body

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

Fact #1991 · Human Body

Queen lead singer Freddie Mercury was born with four extra teeth in his upper jaw giving him his distinct smile.

Fact #2584 · Human Body

Dogs' brains release oxytocin when they look at their owners, strengthening emotional bonds.

Fact #2521 · Human Body