Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
160
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
A man's beard grows fastest when he anticipates sex.
239
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
On average, there's 100 billion neurons in the human brain.
83