In a new video on the Athlean-X channel, strength coach Jeff Cavaliere C.S.C.S. demonstrates a series of exercises that he says will help you build “boulder shoulders” by recruiting all three heads of the deltoid muscle.
He starts off with the dumbbell seesaw press, an alternating overhead press variation where you push one arm up as you’re pulling the other down. “Neurologically, we actually function as push-pull machines, so we can get better output by pulling down while we’re trying to push up,” says Cavaliere.
He recommends doing this for 4 sets, starting with a weight where you can reach failure in the 8 to 10 rep range, then switching to a weight where you’ll fail at 6 to 8 reps for the second, third and fourth sets. Then when you’re hitting fatigue after the fourth set, finish off by dropping one of the dumbbells and perform over-and-backs, using