In Ancient Greece, small penises were desirable, and big ones were for ‘old men and barbarians’
22
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
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
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
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
Your body is creating and killing about 2.4 million red blood cells per second.
17
There are about 1,400 different species of bacteria in your belly button.
10