Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
![Mushrooms are more closely related to humans than they are to plants.](res/uploads/fact/3457/mushroom-human-plants-285.jpg)
Mushrooms are more closely related to humans than they are to plants.
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Your heart will pump about 212 million liters in its lifetime.
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Human hair and fingernails continue to grow after death.
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