It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
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
Lobsters have blue blood.
476
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Your body is creating and killing about 2.4 million red blood cells per second.
17
Your heart will pump about 212 million liters in its lifetime.
26
20 minutes after smoking a cigarette, blood pressure drops to normal.
37