Yawns are more contagious among people with closer relationships.
163
One human hair can support 3 ounces.
191
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
If your DNA was stretched out it would reach to the moon 6,000 times.
256
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
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111