The muscles account for most of the body's energy consumption. When physically active, your body obtains the energy it requires from fats, carbohydrates and oxygen and in so doing burns fat.
From this, it follows that people who engage in little physical activity or work in sedentary occupations should consume as little fat as possible.

1. Movement and sport (Video)
Not all forms of sport are equally suitable for overweight people. If necessary, talk first with your doctor about whether you might be better off taking a long walk each day rather than, for example, running a marathon.

2. Dietary modification (Game)
Successful weight reduction requires modification of your dietary habits. Starvation and crash diets do not achieve the desired results.