There's 100 trillion good bacteria living in your body.
17
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Our Right Lungs takes more air than our left lung.
194
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Your thumb is about the same size as your nose.
124
A person can live without food for about a month, but only about a week without water.
156
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19