Every year your body replaces 98% of your atoms.
119
The human body contains over a billion miles of DNA.
147
Yawns are more contagious among people with closer relationships.
163
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Your heart will pump about 212 million liters in its lifetime.
26
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
Enamel is hardest substance in the human body.
61