Many people have a distorted image of what constitutes a healthy body weight. Looking at yourself in the mirror or comparing yourself to others are not useful ways of assessing whether you are a healthy weight. As frame sizes vary it is difficult for any single measure to be used in specifying a given weight for a given height.

Once you have decided to embark on an exercise regime, use our Calorie Counter to assess the comparative impact that various forms of exercise will have.

With thanks to our partner David Lloyd Fitness for their expert advice on fitness and nutrition