If you get easily hooked on activities that make you feel good then chances are you’re more likely to over-exercise, simply because it makes you feel accomplished, and skipping a workout will make you feel fidgety, lazy and unsatisfied. But resist the urge to go overboard; remember that your body is not meant to perform at 100% all day, every day. Giving your muscles a chance to recover is actually when you’ll maximize muscle definition and achieve the results you want.