Dogs need both physical exercise and mental stimulation.
Remember: A tired dog is a happy dog!
Depending on your dog's energy level, he will benefit greatly from daily aerobic exercise. Off-lead romps in secured areas, running or jogging, interactive games such as fetch, all help burn energy and keep your dog from getting bored and frustrated. (Don't let your dog off lead in unsecured areas, and make sure he wears an ID tag.) Daily obedience training and food "puzzle" toys provide your dog with mental stimulation.
Dog training classes help burn off mental and physical energy. Training classes are fun for dogs and people alike.