Hi Sean - Just to echo what Barrett said, go for it. Walking, jogging, flat water kayaking, cross country skiing, etc are all excellent ways to keep the juices flowing. Exercise will not only keep the weight down, but also helps with cholersterol. Try to do whatever you enjoy, but keep the heart rate elevated for at least 30 minutes, three times a week. The thinking now is that you need to work some spurts into the routine-or what they call interval training. Do some harder exercise for short periods to really get the heart going, then slow it down a bit to catch up. The warm up process is doubly important for heart patients because it allows time for the blood to start to get to the muscles you are using. Likewise, the cool down process gives the blood time to get back to the core so you don't get dizzy right after exercise. If you keep those legs moving for a few minutes after exercise, then that helps pump the blood back to the core. Hope this helps.