Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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If you are cold you are more likely to be hungry because you use energy to keep warm.
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It takes about 20 seconds for a red blood cell to circle the whole body.
102
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
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Our Right Lungs takes more air than our left lung.
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Your heart will pump about 212 million liters in its lifetime.
26
Your body is creating and killing about 2.4 million red blood cells per second.
17
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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