It is possible to lose weight on a low carb diet without exercise, and dieting is actually more important to losing weight than exercise is. Calories and Weight Loss Basics Weight loss ultimately comes down to calories. Calories are the energy in food. Your body always needs energy, and uses calories from food to continue working. Energy from calories fuels every action you take. Carbohydrates, protein, and fat all have calories, but no matter where they come from, the calories you eat are either stored in the body as fat, or burned as energy. Stored calories stay in your body as fat until you use them up. You can do…