In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
The idea of left brain (logical) and right brain (creative) has no basis in neuroscience and is in fact a myth.
16
If your DNA was stretched out it would reach to the moon 6,000 times.
256
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The human brain doesn't stop developing until about 25 years old.
102
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.
21
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55