After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
When you take a step, you are using up to 200 muscles.
886
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
One human hair can support 3 ounces.
191
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Enamel is hardest substance in the human body.
61