thank you so much for your input. I am really weighing not doing too after all your comments. My problem is I let my knees go so long and they are so bad that I’m breathless. I do go to Pilates for the past 20 years three times a week and I am in PT once a week for the last year I am building upper body as much as I can with weightlifting to prepare for this. Again, thank you all for your support and input. It is so helpful and comforting to know I’m not alone.