It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Enamel is hardest substance in the human body.
61
The average person's skin weighs twice as much as their brain.
131
When you take a step, you are using up to 200 muscles.
886
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
Poor eyesight (myopia) is associated with higher IQ.
232