Thirteen years ago I had a weak back and bad knees. My wife TV introduced me to Bikram Yoga in Rockville, after the first yoga session with Diana, I knew that yoga was for me. After taking yoga for two years, we took two weeks vavacation in Europe, I drove everyday for more than 10 hours and did not feel tired, I knew yoga was the only reason that cured my knees and my back. My concerntration has improved tremendously, and my body is now strong and more flexible than when I was 18 years old. I cannot miss yoga for more than a day. My favorite posture is head-to-knee stretching.