The first patented condom was meant to be reused!
47
By weight, Bone is five times stronger than steel.
417
Ingrown toenails are hereditary.
15
The average sperm cell swims at 8 inches per hour.
76
We are born with 350 bones, and die with 206.
135
A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there, though!
25
The human heart creates enough pressure to squirt blood 30 ft.
37