Some people call them stability balls, exercise balls, Swiss balls, or fitness balls. Whatever you call it, this piece of exercise equipment is undeniably helpful in targeting important group muscles like the back, core, arms, glutes, and hamstrings.
We brought you the t-shirt workout to help you carve the perfect torso. Now, we’re going one step further by bringing you the sleeveless t-shirt workout. This routine was designed to target the key muscles of your upper body that must look good if you’re going to dare go sleeveless: