After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
When you take a step, you are using up to 200 muscles.
886
The average person's skin weighs twice as much as their brain.
131
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The average sperm cell swims at 8 inches per hour.
76
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266