Exercising for about 20 minutes a day helps to burn out the excess fat in the body. Exercise can involves light jogging, running or aerobics. During exercise, the cells of the body utilize the fat for producing energy and so the fat gets depleted resulting in body weight loss. Controlling the diet is also very much important. Junk food should be avoided at all costs as these contain a large amount of fats. Changing lifestyle is the best solution to obesity.