I am struggling with knee pain in both knees. It has been off and on for about 8 weeks, but has been more persistent for the last week or so. One week ago I stressed them by over doing it on an elliptical machine. I know now I used bad form and distributed my weight into my knees instead of my thighs. I have had brief bouts of knee pain in years past. 2 times I went to the doctor with the last appointment occurring approximately 18 months ago. Both times he took images and said my cartilage looked healthy. I run regularly on a treadmill. I have no swelling. There is little or no pain when I am walking or active. It hurts when I sit and when I wake in the morning. The pain is along the side of my knees between my legs and some times behind the knee. At times they feel tight when bent. I also have pain in my calfs. I know my achilles are tight. I don't understand why both legs are hurting. Yesterday I did some work in the yard and walked around at the mall and felt great. I thought this episode was over and then I sat for an hour and everything was sore again. I am very active and get very depressed if I have to stop my activity. I read some posts from baseball65 and he seemed to get over debilitating knee pain because it was TMS. I am looking for some success stories to give me hope. I tend to spiral down quickly when faced with physical challenges. I tend to be a fearful person.