Stefan Rivera-Clack's Chest, Shoulders, Back, and Arms Killer!
Stefan Rivera maintains a built physique year-round. In the workout below, he provides exercises to hit some of the most important upper body muscles. If you want to really build and define your upper body, give this workout a go!
Fuel your workout with Nutrients, not stimulants. Pre JYM - The True Performance Pre-Workout
Pre JYM 20 Servings - Orange Mango
Add to Cart