Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Your thumb is about the same size as your nose.
124
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
The average sperm cell swims at 8 inches per hour.
76
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
If your DNA was stretched out it would reach to the moon 6,000 times.
256
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
It takes about 20 seconds for a red blood cell to circle the whole body.
102