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
The human eye blinks an average of 4,200,000 times a year.
233
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132