That is to say, it is not a way of attaching your dog to your body.
Tethering is inherently dangerous to you, or your dog, or both.
If you have a 3 lb. Papillion or Yorkie there is very little that dog can do to pull you off your feet, but they can cause you to trip or fall and then they are tethered to your body and you can fall ON them. This is a dangerous situation for both you and your dog!
Even a very well-trained dog can get carried away by something that over-excites him. In my case a coyote broke cover and dashed past us and my –usually obedient, calm, and well controlled- 90 pound Malinois took me off my feet and dragged me on my face and stomach. Because he was not tethered to me, I had the option of turning loose of the leash. If I had been tethered to the dog I would not have had that option. Anyway, we were both fine except for some scratches and chigger bites in delicate places on me and he was more than somewhat distracted for the next twenty minutes hoping for a glimpse of his escaped prey, so obviously it could have been worse. If there had been pavement or rocks or a steep slope there could have been a great deal of skin damage or even broken bones. To make a long story short, we do not suggest tethering your dog to anything, especially not your body.