The best way to lose weight is not to crash diet or have bursts of exercise, but to make slow changes. The best way to make these changes and stick to them is to make a weight loss program. This can be used to set out your targets, how you are going to achieve them, and changes as they occur. In order to lose weight you need to asses your energy intake. Food is used as energy for your body, and any energy not used is stored as fat. It is therefore essential that you only take in the energy you need and increase your activity level in order to lose weight.