He's a professor emeritus @ UWaterloo, and spent years studying the biomechanics of the back. As a consequence, he's developed exercise techniques (e.g., the "Big 3" - curl up / side plank / bird dog), and a host of diagnostic and treatment techniques for rehabilitating back injury, especially in athletes.
I personally had a dynamic disk bulge that would leave me in bed, unable to move for a couple days at a time, and it was successfully and completely treated by his methods, leaving me completely pain free and in better shape than ever four years later (and I'm an extremely active person, spending ~10 hrs / week on various athletics).
He's a professor emeritus @ UWaterloo, and spent years studying the biomechanics of the back. As a consequence, he's developed exercise techniques (e.g., the "Big 3" - curl up / side plank / bird dog), and a host of diagnostic and treatment techniques for rehabilitating back injury, especially in athletes.
I personally had a dynamic disk bulge that would leave me in bed, unable to move for a couple days at a time, and it was successfully and completely treated by his methods, leaving me completely pain free and in better shape than ever four years later (and I'm an extremely active person, spending ~10 hrs / week on various athletics).