I'm in the same boat and took the staff recommendation to try Cardio Sculpt next. I just finished the second week. It is certainly challenging, but each workout has one of the presenters doing a modified (easier) version. So, by following the easier version where I need to and not worrying if my pace is not always up to theirs I am making it through the sessions and improving.
I also have knee issues. I am currently doing the DBK (kettlebell training program). I have knee support sleeves that I bought and I have to say, I have not had any knee pain at all with these workouts! Best of luck to you! ~Joey
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