The largest cell in the human body is the female egg and the smallest is the male sperm.
682
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
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
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Your thumb is about the same size as your nose.
124
If your DNA was stretched out it would reach to the moon 6,000 times.
256
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13