← All exercisesExerciseGood MorningCompound|AdvancedA barbell is held across the upper back as in a squat, and the torso hinges forward at the hips with a fixed knee bend, loading the hamstrings through a wide range while the spinal erectors resist flexion isometrically under a long lever.Tips & instructionsExercise demonstration videoMuscle groupsPrimary: Bicep FemorisSecondary: Glute MaxStabilizers: Lower BackEquipmentBarbell