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
Your heart will pump about 212 million liters in its lifetime.
26
The human brain doesn't stop developing until about 25 years old.
102
Our Right Lungs takes more air than our left lung.
194
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
A human being loses an average of 40 to 100 strands of hair a day.
133
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22