Sit on a stability ball with feet planted firmly on the ground. Engage your core and lean to one side while reaching the opposite arm overhead and across your body. Feel the stretch along the side of your torso and lats, hold for 15–30 seconds, then return to center and repeat on the other side. Keep your hips stable and aligned with your shoulders throughout.
Log your assisted oblique and latissimus dorsi stretch on stability ball sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.