I second Yoga too. I particularly recommend the "Sun Salutation" exercise : http://ca.youtube.com/watch?v=yuvfHTaftLQ http://ca.youtube.com/watch?v=yuvfHTaftLQ

I second Yoga too. I particularly recommend the "Sun Salutation" exercise : http://ca.youtube.com/watch?v=yuvfHTaftLQ http://ca.youtube.com/watch?v=yuvfHTaftLQ (she's an expert, but you can do the movements as far as you can)