I'm starting my third week on the program. Yesterday morning I managed to do my A series exercises in a hotel room I was sharing with a friend, while she was getting dressed in the bathroom. It's encouraging to find that there is little to prevent anyone from doing these moves. I don't have a lot of room in my house so sometimes I have to move my arms a little differently when doing the "sun salutation lying down" but I don't think my minor adjustments affect the basic exercise.
Sunday I drove to Desert Hot Springs and yesterday I drove back. It takes over five hours each way. I am happy to report that I have no lasting effects in my knees from the drive and I didn't have any difficult times along the way. I say this because sometimes pressing the accelerator or clutch can be very painful. I am not saying, of course, that the program is entirely responsible for a reasonably pain-free drive. Certainly I still had to stop a few times to get my legs working again after they stiffened up. I wonder if this will change over time.