If you’re looking for a martial art which is not as vigorous as karate or judo but still has the benefits, Tai Chi is a great place to start – and perhaps stay. Still strong on self-defence techniques and the discipline necessary to develop these, its deliberate and flowing moves are excellent for relieving stress and anxiety. The Fung Loy Kok Institute of Taoism will give you pointers about classes all over the GTA. They run introductory weekends as well.