Sometimes when you try to lose weight and exercise hard it can be frustrating if you don’t lose anything significant. One reason could be that regular exercise builds strong muscles, and muscle weighs more heavily than the flab it replaces. It takes time and effort to rebuild strong muscle and to stretch out and tone your entire body. Perhaps you could jog twice a week? If that is too strenuous I recommend you walk for half an hour every day instead. But it must be a brisk walk to keep your metabolic rate up.