5 erector spinae exercises // How to Get a Strong Low Back EXERCISE STEPS Exercise 1 :- Seated Back Extension 4 sets 12 reps Exercise 2 :- DB Stiff Leg Deadlift 4 sets 12 reps Exercise 3 :- BB Good Morning 4 sets 12 reps Exercise 4 :- Smith Deadlift 4 sets 12 reps Exercise 5 :- Back Extension 4 sets 12 reps