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
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
If you are cold you are more likely to be hungry because you use energy to keep warm.
144
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Your body is creating and killing about 2.4 million red blood cells per second.
17
In one day, adult lungs move about 10,000 litres of air.
11
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
There are about 1,400 different species of bacteria in your belly button.
10