Mosquitoes don't just bite you, they also pee on you.
11
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Your heart will pump about 212 million liters in its lifetime.
26
Consumption of TNT turns urine amber or deep red, which people often mistake for blood.
301
Lobsters have blue blood.
476
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
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