There is no better motivation in my book than to see my dog's exuberance when he sees me putting my shoes on for our morning walk. Dogs need exercise, and as their steward you must walk them. Don't cheat the little fella out of his joy by just walking to the fire hydrant at the end of the block.
All you need is a dog and a leash. Don't forget to pick up her poop. I use a plastic grocery bag and when it has anything in it I tie the bag to the middle of the leash so I don't have to carry it.