@jk The Leslie videos are better than walking outside because you have to keep moving to participate in the video class. It is hard work! Outside, the walk is too easy to become a stroll, or if a neighbor stops to chat, it ruins the move from warm up to intensity and then cool down. I have always been told that to exercise properly, there needs to be consistency---like a story: a beginning, a middle, and an end. I find Leslie tapes challenging, and they provide that variety that keeps people moving.
Carol