He should lose one pound/week
He discovered that in order to shed one pound of fat, one must have a calorie deficit of roughly 3500 kcal. He calculates that if he consumes 500 fewer calories per day than usual, he should lose one pound each week. He weighs himself in the gym at the same time every day and is pleasantly delighted to see that by the end of the first week, he had dropped 3 pounds.
Calories are the units of energy used by your body during food digestion and absorption. A food might provide your body extra energy if it has more calories.
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