When you take a step, you are using up to 200 muscles.
886
Yawns are more contagious among people with closer relationships.
163
The human body contains over a billion miles of DNA.
147
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Every year your body replaces 98% of your atoms.
119
Poor eyesight (myopia) is associated with higher IQ.
232