Power Trim The obvious solution for a long term weight loss and the secret for how to get perfect abs, is exercise combined with dieting. If, for example, you burn 250 calories a day exercising and you eat 250 less calories a day, you can lose a pound a week without spending hours at the gym and depriving your body of a piece of pizza every now and then. You don't have to become a bodybuilder to make this work.