HOW TO DO IT
Stand with feet hip-to-shoulder-width apart, holding a relatively light barbell across your upper traps. Keeping your back flat and knees slightly bent, slowly bend your hips back to lower your torso toward the floor. When your torso is parallel with the floor, reverse the motion to return to the standing position.
WHY YOU SHOULD BE DOING IT
“Good mornings target the larger posterior chain muscles [glutes, hamstrings, and paraspinals],” says Guillermo Escalante, a California-based bodybuilder, “which can help you improve your strength in lifts like the deadlift and squat, as well as decrease your risk of lower-back injury.”