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
Mosquitoes don't just bite you, they also pee on you.
11
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
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
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
Consumption of TNT turns urine amber or deep red, which people often mistake for blood.
301