It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Your body is creating and killing about 2.4 million red blood cells per second.
17
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
The average sperm cell swims at 8 inches per hour.
76
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The human sigh acts as a physiological reset button.
23
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16