What are calories? Is it the amount if energy in a food? How does the body uses calories, burns calories, and how does excess calories becomes fat?
Why are food “low in calories” good for you? Why are food of the same size, have different amount if calories?
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The calories that a food “has” is actually the amount of calories your body has to use to burn that food off. Your body only uses a set amount of calories each day and you can add more with exercise. If you take in more calories than your body burns, you gain weight. If you burn more than you eat, you lose weight. It takes 3500 excess calories to gain a pound and 3500 in deficit to lose a pound. For example, if your body burns 2000 calories per day and you eat 1500 calories per day, you’ll lose a pound per week. This is why it’s so hard to lose weight and extremely easy to gain it.
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