In the average lifetime a person will breath in about 44 pounds of dust.
21
Fidgeting can burn about 350 calories a day.
201
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
You see your nose at all times, your brain just chooses to ignore it.
30
35,000 people in the U.S. will die from the flu annually.
6
The average sperm cell swims at 8 inches per hour.
4
Smoking while pregnant increases the chances of spontaneous abortions (miscarriages) stillbirths and premature labor.
77