Men have larger hearts; women's hearts beat faster.
77
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
145
Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
Your skin is actually an organ.
88
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Laughing could dramatically improve your health – and be as good for you as a deep state of meditation, researchers have found.
28
Your heart beats over 100,000 times a day!
54
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5