In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
The human sigh acts as a physiological reset button.
23
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
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
A person can live without food for about a month, but only about a week without water.
156
Your body is creating and killing about 2.4 million red blood cells per second.
17
Your thumb is about the same size as your nose.
124