If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
Chewing gum boosts your brain power.
285
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
One human hair can support 3 ounces.
191
The average sperm cell swims at 8 inches per hour.
76
Yawns are more contagious among people with closer relationships.
163
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46