2.
Your brain is 60% fat.
4.
Your brain uses about the same amount of power as a 15 watt light bulb.
6.
Your brain is only about 2% of your body mass, but uses up to 20% of its blood.
7.
You yawn when someone else does because of something called mirror neurons (probably).
8.
There are about 86 billion neurons in an average human brain.
9.
The brain can survive for up to 6 minutes after the heart stops.
10.
Your brain can't feel pain.
12.
A human brain can do more computations per second than a powerful supercomputer.