A simple understanding of the process your body goes through when dropping the pounds. Fat along with protein and carbohydrates is stored energy, plain and simple. Calories are the unit that is used to measure the potential energy in said fats, carbs, and proteins.
Your body will convert fat to usable energy through a series of chemical processes, and any excess energy (calories) that you don’t need will be stored away.
To lose weight, you must expend more energy or calories than you take in.When you are using more than you taking in, your body draws on stored fat to convert it to energy, which makes the fat cells shrink.