I've started doing this as really like it as I don't have much time to exercise and a SAHM so it's perfect really. But, my knees are getting sore in the squats and lunges, which isn't a good thing. It's not technique - this is an old running injury flaring up, and I've been watching my technique very carefully.
So I was wondering if anyone knew of any modifications? I'd hate to stop doing it, but not sure if I can continue otherwise.