Some posts on a few threads regarding soundness, touched on the importance of good warm up before running a dog. As a once horse person, I surely know I would not take a horse out of a trailer and run a cross country course without a systematic and focused warm up. Yet you see all the time, dogs taken off the truck, put on the line to run a big triple or quad, or even in the case of very young dogs a double over hard ground. Because we are having to move slowly with our young chessie and in order to keep Indy as sound and fit as he is, I really would like to learn some "warm up" ideas. Are there any books, specific exercises that have worked, that might demonstrate a routine? Or is a good walk at heel good enough?