Why is it common for people to have dramatic weight loss when they first start on a low-calorie diet?
a. Their heavy fat molecules are immediately depleted, causing them to lose weight quickly.
b. The body uses up all of its carbohydrate reserves, which alone weigh quite a bit.
c. The body breaks down glycogen with water molecules bound to it; much of the weight loss is water loss.
d. The body converts stored carbohydrates into fat, which is lighter than carbohydrates.
e. Low-calorie diets increase their metabolic rates, so they burn up both carbohydrates and fats very quickly.