After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Within three days of death, the enzymes that once digested your food begin to eat you.
22
There's 100 trillion good bacteria living in your body.
17
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The average sperm cell swims at 8 inches per hour.
76
Your body is creating and killing about 2.4 million red blood cells per second.
17