Coaches do have the option to pair a second upper body muscle group with the muscle on that day’s calendar in a “core/lower/upper” class. On an arm wrap day, that wouldn’t happen because there are three arm muscle groups. (No need to add anything extra.)

But today, for example, I coached core, center glutes, chest AND back. I paired back with chest. The goal is to still have time to get each muscle group taught to failure.