Your heart will pump about 212 million liters in its lifetime.
26
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
There are more bacteria in your mouth than there are people in the world.
60
One quarter of the human brain is used to control the eyes.
43
On average, there's 100 billion neurons in the human brain.
83