One Sore Back

Doug's back started really bothering him on Monday and continued today.  We haven't been able to pin point the trigger, but riding in the car and sitting in the office have been the hardest on it. This happens to his back about three times a year and lasts for about five days.  The lower back becomes tight and he can't walk standing up.  The part I have found most strange is that he can still exercise albeit at a less intense pace.  Tonight he decided to try the treadmill at the racquet club.  With a lot of stretching he was able to get in about 45 minutes while watching Meg play.  It sure looks painful, but he said that it doesn't hurt too bad.  Hoping that he starts to feel better soon.