about twenty years ago Jon started exercising on a regular basis and has yet to stop. In fact, he has been active so long that I believe it has become his habit. He gets anxious when he doesn’t have an opportunity to exert energy. While he changes the activity—from volleyball to CrossFit, rock climbing to Krav Maga—he has remained consistently active the entire time. When he comes home from work, his brain is excited about hitting the gym or the volleyball court or whatever. He still has the potential to get lazy, but for all practical purposes he has successfully changed his behavior.
