But it does depend on the type of foods. For example, let's take a serving of almonds listed at 160 calories. Your body may only absorb 120 (depends on the person) of those calories to be burned due to the fiber in the almonds. While foods with sugar and little fiber, you get close to 100% of the listed calories.
Sure, and that kind of thing falls into the 20% of the 80:20 rule of most things. The vast majority of people loose or gain weight based on their calorie in take / expenditure
