20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Lobsters have blue blood.
476
Your heart will pump about 212 million liters in its lifetime.
26
Mosquitoes don't just bite you, they also pee on you.
11
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
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
Your body is creating and killing about 2.4 million red blood cells per second.
17