Yawns are more contagious among people with closer relationships.
163
One human hair can support 3 ounces.
191
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Your thumb is about the same size as your nose.
124
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
If your DNA was stretched out it would reach to the moon 6,000 times.
256