I really want to lose some body fat and I think HIIT will help, but I have bad knees and I can't do the impact! How is it possible to really give it my all during short, high intensity cardio drills when my knees kill me?? I've tried changing to lower intensity, longer cardio sessions but that hasnt seemed to work, not to mention I dont have much time to workout so I want to make the most of the time I have. I need bionic knees I think lol. I cant even do jumping jacks without my knees aching the next day
Help!
Help!