There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
You can't tickle yourself.
29
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Yawns are more contagious among people with closer relationships.
163
One human hair can support 3 ounces.
191