If you hold farts in during the day, they'll just come out when you sleep.
16
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
There's 100 trillion good bacteria living in your body.
17
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
There are about 1,400 different species of bacteria in your belly button.
10
