I had a great PT and was "released" after 4 months. Our socialist health care does not cover this but my employer's group plan covered over half of it. Personally, I thought it was money well spent, and I found it harder to get motivated to do the exercises at home. Bike riding is great. I bought an old indoor bike in mint condition at a second-hand store for $15 and it was a bonus on foul-weather days. If you work in an office and have a chair on rollers and a floor with carpet, try scooting around in your chair, especially if you can "walk" a straight line, turn around and do few laps. This is a killer hammy exercise but will get you some strange looks from your co-workers.