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      Your metabolism or metabolic rate refers to the amount of calories your body burns in any given moment. It is a built in engine designed specifically to burn calories. Whether your watching TV or exercising, your metabolism is always burning calories. It is naturally higher when exercising.

      I'm sure you've heard some people talk about a slow metabolism or something that speeds up their metabolism. They are referring to their resting metabolism or basal metabolic rate (BMR). This is the total measure of energy expended for normal maintenance, repair and function of your body. Your brain, kidneys, liver, and other organs need calories to function properly. They are working away 24 hours a day. During this 24 hours, energy is expended in the form of calories. Calories you need to simply to stay alive.

      The speed of your metabolism depends on the amount of fat free mass you have.This includes your bones, muscles, blood, organs, and tissue. The bigger your bones, muscles and organs the more energy your body expends to stay alive. Your weight also effects your metabolism

      Men usually have faster resting metabolisms than women, because they naturally have bigger bones and muscles. The metabolism also slows down through age due to the loss of muscle tissue and decrease in physical activities. If you don't exercise your body loses 1/2 pound of muscle per year. Muscle needed to give you your strength and energy. By following an exercise regimen faithfully you can dramatically cut down on that lost muscle to keep that metabolism active.

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