Your thumb is about the same size as your nose.
124
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Your body is creating and killing about 2.4 million red blood cells per second.
17
Chewing gum boosts your brain power.
285
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Poor eyesight (myopia) is associated with higher IQ.
232
If your DNA was stretched out it would reach to the moon 6,000 times.
256