There are
7 tips to speed up your metabolism. Calories do count, but it's also about how efficiently your body burns those calories. Your metabolism plays a big part in regulating your weight. Metabolism is the way your body uses up calories from the food you eat and turns them into energy.
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Yes, the more muscle tissue
Yes, the more muscle tissue that you have, then the more calories you will burn each day. Think of weight lifters and the number of calories they have to eat each day just to maintain their weight.