After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The average person's skin weighs twice as much as their brain.
131
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Enamel is hardest substance in the human body.
61
Your heart will pump about 212 million liters in its lifetime.
26
One human hair can support 3 ounces.
191
The average sperm cell swims at 8 inches per hour.
76