Losing weight is about calories in versus calories out. To lose weight, you need to eat fewer calories than you burn each day through exercise and general living. How much you need to eat each day varies based on your height, weight and activity level.
Counting calories is a complicated business. Fat, carbs, protein, sweets are all calories created equal, or are some better than others? To know more about the calorie calculation needs to make your goal having a healthy beauty body, is good for you to see this video.