The average sperm cell swims at 8 inches per hour.
76
One human hair can support 3 ounces.
191
The human brain doesn't stop developing until about 25 years old.
102
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
The average person's skin weighs twice as much as their brain.
131
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55