From that point on, you drive the dumbbells up and back driving your total torso right into a rowing movement, then return to beginning posture. The classic spinal erector exercises are deadlifts and front squats. You can do dumbbell Romanian deadlifts, and that may help. You may as well do https://marcogjiif.blogscribble.com/33398625/a-simple-key-for-hammer-strength-dumbbell-rack-unveiled