Did you know?
The human brain is 80% water.
The human brain has about 100 billion neurons.
The longest living cells in the body are brain cells which can live an entire lifetime.
The signals sent from neurons to other cells move at about 200 miles per hour.
The energy consumption of the brain is equal to a 20-watt light bulb.
The brain uses more then 25% of the oxygen used by the human body.
After 30, the brain shrinks a quarter of a percent each year. (0.25%)