Understand calories: If you want to lose weight then you need to understand how calories work. There are a variety of weight loss calculators available that will estimate how many calories you need to maintain your current lifestyle. If you want to lose weight then you need to be consuming less calories than your body wants. So to maintain an average weight loss of 1 pound per week you need to aim to reduce your daily intake by about 500 calories. It is not recommended that you combat weight loss by restricting your intake alone but by doing some form of exercise you don’t need to reduce your calorie intake as much.