Human brain

Hippocrates ancient Greek physician found that the brain plays an important role in sensation and intelligence in 400 BC. Human brain is active more in night than in the day time. When a person breath, 20% of the oxygen goes to the brain. Human starts losing 7000 brain cells a day when he or she attains the age of 35. The human brain generates 25 watts power when the person is awake which is enough to light a Bulb. There are 100,000 miles of blood vessels in the human brain. The weight of the human brain is 2% of the total body weight. The human brain is divided into two parts the right and left, left part of the brain controls right side of the body and the right controls the left side of the body.