I was very happy with the course I did in September 2010. With perseverance I have gained valuable knowledge of my own body and have managed to overcome my limitations. My ability to relax is deeper than previously possible when under stress and pressure from my living conditions. I can concentrate on my work better and my Tai Chi art has also improved. It is worth maintaining a level of understanding when learning Buteyko. So, to all those interested in giving it a try I highly recommend doing a course with Glenn White. I take each day as it comes and in times of change these exercises can help to clear the mind and stay focused. I look forward to continued benefits such as deeper sleeping and remembering my dreams, which I seldom ever used to do!