Calorie calculator :  explanation of calories and their impact on weight.  Whether you want to manage your weight or just learn more about how your body works, this guide will cover everything you need to know. What are Calories? Calories are units of energy found in food and drinks. They are like fuel for your body, helping it function properly. Energy Balance and Weight Maintenance Maintaining weight is all about balancing the energy you get from food (calories consumed) with the energy you use (calories burned through daily activities and exercise). How Your Body Stays in Balance? Keeping your body at a healthy weight is like keeping a scale in balance. On one side of the scale, you have the energy you get from the food and drinks you consume. On the other side, you have the energy your body uses to function and be active. When you eat and drink, you're putting energy into your body. This energy comes in the form of calories. Your body needs calories to do everyday things l...