Your heart will pump about 212 million liters in its lifetime.
26
Poor eyesight (myopia) is associated with higher IQ.
232
Yawns are more contagious among people with closer relationships.
163
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Your thumb is about the same size as your nose.
124
Every year your body replaces 98% of your atoms.
119
Enamel is hardest substance in the human body.
61