Nearly fourty-percent of dogs in the U.S. today are obese. And just like humans they have the risk of heart disease, a shortened life and arthritis. Dogs, just like you, need their exercise.
Exercising helps both you and your dog(s). Once the dog is taken out a few times to run, walk or taken on trips to the dog park, they will start depending on you to follow-up with the routine. Thus, bringing you off the couch more often to exercise with them. After a while, they count on you.