Your body is creating and killing about 2.4 million red blood cells per second.
17
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Mosquitoes don't just bite you, they also pee on you.
11
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Your heart will pump about 212 million liters in its lifetime.
26
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
Lobsters have blue blood.
476