The Brain

The brain can store 100 trillion pieces of information. In each second the brain receives more than 100 million nerve messages from the body. The brain loses 1,000 cells per day, which are not replaced, and yet memories are maintained. The brain cannot feel pain. If a surgeon operates on the brain, the patient feels no pain. During the first six months of a baby's life, its brain doubles in size.

The human brain weighs about 3.5 pounds. A man's brain is heavier than a woman's brain. The brain weighs one-fiftieth as much as the body, but uses one-fourth (25 percent) of the body's oxygen. The left side of the brain controls the right side of the body; the right side of the brain controls the left side of the body.

If you are right-handed, you have a strong left brain; if you are left-handed, you have a strong right brain. The left brain controls math, language, and logic. The right brain controls art, color, and music.