Influences on your calorie needs and metablism
* Body size and composition. To function properly, a bigger body mass requires more energy (more calories) than does a smaller body mass.
* Muscle burns more calories than fat does. So the more muscle you have in relation to fat, the higher your basal metabolic rate.
* Age. As you get older, the amount of muscle tends to decrease and fat accounts for more of your weight.
*Metabolism also slows naturally with age. Together these changes reduce your calorie needs.
* Sex. Men usually have less body fat and more muscle than do women of the same age and weight. This is why men generally have a higher basal metabolic rate and burn more calories than women do.
* Muscle burns more calories than fat does. So the more muscle you have in relation to fat, the higher your basal metabolic rate.
* Age. As you get older, the amount of muscle tends to decrease and fat accounts for more of your weight.
*Metabolism also slows naturally with age. Together these changes reduce your calorie needs.
* Sex. Men usually have less body fat and more muscle than do women of the same age and weight. This is why men generally have a higher basal metabolic rate and burn more calories than women do.
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