Mosquitoes don't just bite you, they also pee on you.
11
Your body is creating and killing about 2.4 million red blood cells per second.
17
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
476
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
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
20 minutes after smoking a cigarette, blood pressure drops to normal.
37