This is a group of individuals who have had any type of heart surgery or heart/coronary artery disease that shouldn't exercise alone. This is for people who can't and shouldn't fly up the hills hiking or average twenty miles an hour bicycling. It's for people who want and need to exercise but don't want to push beyond their limits to please healthier people around them. I would anticipate there would be improvement in ones health and stamina over time. The best outcome is that everyone would improve and group with people who are equally capable, but there always would be a group of people that you fit in to.