Turn your dog’s favorite pastime into a fitness workout for you. When they’re chasing the ball or the disc get yourself moving, too. Quit checking your phone and, instead, work in a few lunges, squats, or pushups. You could even mix in a few runs alongside your dog as he chases the ball. Just make sure your dog is completely safe off-leash, ideally in a fenced-in area that’s suitable for running back and forth without exposing both of you to the danger of sudden incoming vehicles.