The human brain uses approximately as much energy as a 10 watt light bulb.
120
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
The average person's skin weighs twice as much as their brain.
131
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
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19
If you hold farts in during the day, they'll just come out when you sleep.
16
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Your body is creating and killing about 2.4 million red blood cells per second.
17