Question: how many reps good mornings?
Answer: Good mornings target your entire posterior chain—especially your hamstrings and lower back. Reps/sets for best results: Aim for 12 to 15 reps with a 5 to 10 pound weight for a sure-fire way to get the hamstrings, glutes, and lower back ready for heavier lifts like deadlifts and squats, Murrieta says.