It takes about 20 seconds for a red blood cell to circle the whole body.
102
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
The human body contains over a billion miles of DNA.
147
Every year your body replaces 98% of your atoms.
119
Our Right Lungs takes more air than our left lung.
194
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
Your body is creating and killing about 2.4 million red blood cells per second.
17