Hi! I just began using your Circuit Max video and really am enjoying your routines and the challenge! You have the best personality and moves that I have come across so far and look forward to attempting to master your other collections. This leads me to my question. My mother is 56 and very over weight. I am so concerned about her health and know that exercising is the key. I think that she would really enjoy your videos, but she has bad knees and is scared to try anything too rigorous. She is at a point where she wants to improve her quality of life and I was curious as to whether you could suggest a tape that might be easy going enough on her physically to get her started. I want her to associate exercise with fun, energetic feelings, and not tiresome, boring and monotonous activities. Thank you so much for your suggestions!!!