I was watching Good Morning America this morning, they did a segement on a family whos father and son have been running marathons and triathalons together since the the father was 40, and he is now 60, the even competed in the Ironman together.The truley amazing part is that the son, has CP and is confined to a wheel chair, and is imoble.They swim with the father towing the son in a boat, bike with him on a specially made bike, and run while the father pushes a specially designed wheelchair.