Your body is creating and killing about 2.4 million red blood cells per second.
17
Lobsters have blue blood.
476
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
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
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
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
Mosquitoes don't just bite you, they also pee on you.
11
20 minutes after smoking a cigarette, blood pressure drops to normal.
37