Mosquitoes don't just bite you, they also pee on you.
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Your heart will pump about 212 million liters in its lifetime.
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Your body is creating and killing about 2.4 million red blood cells per second.
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Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
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10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
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Consumption of TNT turns urine amber or deep red, which people often mistake for blood.
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If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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