The man in this video is working out with his very coordinated dogs. They are Border Collies. Holly weighs about 17 kg (about 37.5 pounds) and helps her owner with pushups. Her owner is in extremely good shape, as he holds a straight line when he does his pushups.
Then there is Ace, who weighs about 18 kg. Together with Holly, their owner is holding 77 pounds on his stomach as he works out in the bridge position. And keeping his body straight. Holly and Ace have been trained to do this. One word from their owner, and they know to sit with their hands up.
Enjoy watching this very impressive workout videos of 2 dogs and their owner.