I have taken up yoga in the past year and love it. But over the past 4 months I have gone to class so infrequently due to fatigue, but mostly due to my muscle pains and KNEE pains and swelling when kneeling, which we do a lot of in our yoga class. I was also recently diagnosed with Lyme Disease and Fibromyalgia. Does anyone have a good yoga routine that is easy on the knees??