After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
It takes approximately 12 hours for food to entirely digest.
93
Your thumb is about the same size as your nose.
124
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
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
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89