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
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
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
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
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Mosquitoes don't just bite you, they also pee on you.
11
Lobsters have blue blood.
476