Imaging studies have shown that exercise literally increases blood volume in a region of the brain called the dentate gyrus.
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Exercise does not provide the oxygen and the food. It provides your body greater access to the oxygen and the food.
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You can live for 30 days or so without food, and you can go for a week or so without drinking water. Your brain, however, is so active that it cannot go without oxygen for more than 5 minutes without risking serious and permanent damage.
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brain represents only about 2 percent of most people’s body weight, yet it accounts for about 20 percent of the body’s total energy usage—about 10 times more than would be expected
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ack La Lanne, born in 1914, has been called the godfather of the American fitness movement. He starred in one of the longest-running exercise programs produce