Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human sigh acts as a physiological reset button.
23
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
There are about 1,400 different species of bacteria in your belly button.
10
Your heart will pump about 212 million liters in its lifetime.
26
Your thumb is about the same size as your nose.
124
Held in farts enter your bloodstream and are bad for your body.
26
You see your nose at all times, your brain just chooses to ignore it.
30