I have had runners knee since july and i have iced and stopped running completely. I am starting PT soon, however its quite expensive. I am going insane with lack of cardio. Is there any exercises that burn a good amount of calories without high impact? swimming for me is not an option, but open to anything else. Finally, what can i do to make the pain in my knees subside? i have pain in both of them that hasnt gone away since july? Hoe can i make it heal quicker? any advice? thanks