Pain travels through your body at 350 ft. per second.
36
The average sperm cell swims at 8 inches per hour.
4
The tongue is the strongest muscle in the human body.
50
Fingernails grow fastest on the hand you favor.
44
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
Male hospital patients fall out of bed twice as often as female hospital patients.
71
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