I am with you on the whole joint friendly workouts. I consider myself fortunate, because I do not (and hopefully won't have issues with my knees), but I have learned on this forum that many others have knee issues. My wrists, however, are shot. I also have weak ankles, but have found that adding a tiny bit of impact for short periods of time actually strengthened them to some extent. My wrists are the main thing that prevent me from lifting heavy. I bought a pair of Cathe's wrist support gloves, and if we ever finish moving and I can actually locate which box they are in, I'm hoping they'll help some. Just trying them one time, though, I didn't feel they were going to be enough to help me increase my weight. I have a bad upper back, but that's not really an age thing. It just is what it is. I'm small framed, but throughout life have had to take care of things things that needed a bigger and stronger person to handle it. While I don't yet have bad knees, I often feel a bit of a strain when doing cardio - like I almost torqued them. I think it's actually due to having less agility as I age, rather than the movement itself. Whenever I look up "joint friendly", the results suggest walking. Walking isn't enough to burn off my excess energy. Also, I can't walk fast enough to get my heart rate up, because I can't leave my son home alone, and he's only capable of walking slowly. My searches barely even mention strength training, which is what I'm trying to increase. I have shoulder issues, but I have a feeling that that is related to the same things I did throughout my life that damaged my back, rather than age. My neck (part of the upper back issues) affects me when doing some strength training, so I hold the barbell in front instead of behind my neck in order to modify those moves/exercises. I'm at a high intermediate level for cardo and I would consider myself an average intermediate for strength training that focuses on high reps. I want to start adding heavy weights to my workout, but it just doesn't seem possible, so I'm not even at a beginner level for that yet. I need to find a way to do it that doesn't stress my wrists, which I don't know if that's even possible. I tried strengthening my wrists, but they have a mind of their own.