Dogs are natural players and lovers of running. If you find that your pooch is quite dormant and has little interest in natural activities he may also be ill or could be his natural tendency. But you will have to influence your lazy dog to get up out of that slumber and do a little tail chasing.
Bring the Dog To A Dog Park
Take the dog out side at a location large enough where he may see a different environment and become interested enough to want to explore. He will see other dogs being active and this may just trigger his tail chasing gene. You cannot expect your dog to be interested in sprinting if you dabble along with that box of jelly donuts. Run with you dog at the dog park and get him all wound up. Bring one of his favorite balls and see if he would play fetch. Bring along a couple of healthy dog snacks as bit of motivation and incentive.
Play with him at home
I mean dog play, not just standing their and saying "come here boy" and then patting him or rubbing him behind the ear and then pour seven pounds of dog food in his bowl. You need to get down to his level, go down on all four knees and act doggy. Run like a dog up to him and grab him and twirl on the floor while barking like a dog. Pick up a ball in you mouth and run and on your hands and knees and see if he chases you. Hang on to his tail with your mouth and and pull him, he will have a blast while getting some good exercise.
Put Your Dog On The Treadmill
So you may not have time for the dog park nor do you find it tasteful to go down on all fours and play with your dog, you can always get a doggy treadmill and put your dog to work. If you are one of those always on the go people but still have and love your house dog, you can acquire a doggy treadmill so your dog can get the proper exercise he deserves. Many people have different types of dogs and some dogs just simply display a lonesome character and tend not to want to run and mingle and get the proper exercise he/she deserves. Most dogs that have showed this character seems to love the Dog treadmill. It is safe and quite convenient. So now you have no excuse as to why your Dog is not getting enough exercise.