My kids are on spring break this week, so on Wednesday we were all at SuperTarget and it turned out they had a Wii Fit board in stock (that doesn't happen very often, we've been looking for one for a long time). Anyway, we got it, and the kids and I (and even my husband! ) have been using it almost nonstop ever since. It is very gentle but effective exercise. It's also very encouraging and motivating. I love the balance category of games. When I was seeing a physical therapist this Winter, she said that my balance was very off. I have a very strong lower body, but very weak abs and upper body. My poor posture was causing me even more neck and shoulder pain than I would have been in anyway. (And who needs even more pain than we have already??). The balance games are so much fun! You sort of wobble and lean on the board and you do slalom skiing, marble games, tightrope walking, ski-jumping, heading soccer balls, etc. For aerobics you can do hula-hooping (which is way more fun than it sounds, and much easier to get the hang of than "live" hula-hooping.) Yesterday I was only one point off my kids' high score on the scoreboard. All of the exercise is low-impact. It reminds you frequently not to jump on the board. I haven't done any of the strength training yet because my muscles cramp up just thinking about it, but there is yoga you can do too, which looks do-able. If you know someone who has one, it might be worth trying it out at their house.