If your dog pulls on the leash, then the walk is neither healthy for the dog nor relaxing for you. It’s also a sign that you and your dog are not paying attention to each other — it takes two to pull.
Pulling on leash is very rewarding to a dog. What do we mean by this? The action of pulling doesn’t feel so bad at the time and it gets them where they need to go. Any behavior as rewarding as pulling on the leash takes a lot of commitment to fix. Keep in mind that a dog that’s beside you on a tight leash is still pulling!