Our brains have a negativity bias and will remember bad memories more than good ones.
15
There are more bacteria in your mouth than there are people in the world.
60
Your tongue is the only muscle in your body that is attached at only one end.
173
Pain travels through your body at 350 ft. per second.
36
A woman's sense of smell is most sensitive during ovulation.
34
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The aorta, the largest artery in the body, is almost the diameter of a garden hose.
37
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26