The human brain doesn't stop developing until about 25 years old.
102
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
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
There are about 1,400 different species of bacteria in your belly button.
10
If your DNA was stretched out it would reach to the moon 6,000 times.
256
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
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
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22