All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
Held in farts enter your bloodstream and are bad for your body.
26
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
The average person's skin weighs twice as much as their brain.
131
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
The average sperm cell swims at 8 inches per hour.
76
The human sigh acts as a physiological reset button.
23