Every year your body replaces 98% of your atoms.
119
Enamel is hardest substance in the human body.
61
The human brain has the capacity to store everything that you experience.
4k
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Yawns are more contagious among people with closer relationships.
163
If your DNA was stretched out it would reach to the moon 6,000 times.
256
One human hair can support 3 ounces.
191