1. You cannot tickle yourself because your brain can distinguish between unexpected external touch and your own touch.
2. Your brain uses 20% of the total oxygen in your body.
3. The human brain continuallycreates neurons inresponse to mental activity.
4. Children who speak two languages before the age of five will have denser gray matter as adults
5. The human brain is the fattest organ in the body and can consist of 60% fat.
6. Your brain consists of about 100 billion neurons.
7. The brain is made up of about 75% water.
8. The weight of the human brain is about 1.5 kg (3 lbs.).
9. The total surface area of the cerebral cortex is about 2500 sq. cm (2.5 ft2)
10. There are anywhere from 1,000 to 10,000 synapses for each neuron.
11. A newborn baby's brain grows about three times its size in the first year.
12. Information from the brain to other parts of the body can travel as fast as 268 miles per hour.
13. While awake, your brain generatesenough energy to power a light bulb.
14. An area of the brain called the amygdala allows humans to ascertain another person's mood by reading facial expressions.
15. Studies show that brain waves are more active while dreaming than when you are awake.
16. Reading aloud and talking often to young children promotes brain development.
17. The brain of an adult human weighs around 1,400 grams or 3 pounds. This is an average of 2% of a person's total body weight but the brain uses 20% of its energy.
18. Other animal brain weights in grams; sperm whale 7,800, elephant 4,783, cow 450, squirrel 7.6, goldfish .097, cat 30.
19. The brain is suspended in Cerebrospinal fluid. It floats and the liquid acts as a cushion from blows to the head.
20. For the most part one side of the brain controls the other side of the body
21. There are over 100,000 miles of blood vessels in the human brain.
