Instead, just get active. You will probably live longer by getting fit rather than getting thin. Give up as many motorised trips as possible. Instead, walk, skate, cycle, and use the stairs. Walk or bike through the neighborhood, join or start a walking club, a cricket or football team, or a regular fitness event in your local park. Put all the energy you have previously devoted to food into a healthy alternative, boosting your own health as also that of others.