Mosquitoes don't just bite you, they also pee on you.
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From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
22
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Your heart will pump about 212 million liters in its lifetime.
26
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Your body is creating and killing about 2.4 million red blood cells per second.
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It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
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.
13