Your should try Blue Wilderness, my beagle loves it.
Healthy eating and exercise is your answer
The overload princiole could make this workout more challenging as this is a full body workout and the point of overload is to push ur body until you cant do anymore which will cause you to achieve strength and muscle mass faster than small workouts. this specifically is good because its a full body workout and you will push your body to the best of its abilities. Hope this helped !!
