One thing you see in Europe is infrastructure that encourages physical activity. I was in Munich not long ago and I was blown away by the number of bicycles, the ring roads to keep the traffic out, the big wide sidewalks, and the bicycle paths integrated with the sidewalk instead of along the side of the road.
I think all age groups benefit. You see people my age zooming around everywhere on their bicycles. It's a way of life. I think there is a role for all levels of government. Heart and Stroke Foundation works with all levels of government, and there is a role for the federal government in supporting this kind of infrastructure in Canada.