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
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
22
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
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
In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
Your body is creating and killing about 2.4 million red blood cells per second.
17
If you are cold you are more likely to be hungry because you use energy to keep warm.
144