I too feel that some of the "tactics" are rough and they match well with some of the larger breed of dogs. I also use a harness when walking my Pyp but I do endorse the exercise and activity. My guy (2 yrs old) gets to run and fetch outdoors in the local park and would continue like an ever-ready yorkie if I do not monitor the time!
It does seem that an "exercised" dog is more receptive and (in my case) happy.
