Understanding how to calculate your caloric needs to reach your goal – such as muscle growth – can help you to best understand how to give your body precisely what is required to get there. That said, it’s not uncommon to forget about this step. Controlling your calories is important to losing weight. If you do not control your calorie intake, you will not be able to burn fat. That said, your food calories are also the energy your body needs for growth in areas well beyond stored fat.