The dumbbell pull-over is a popular muscle and strength-building exercise that targets the muscles of the chest, upper back, lats, and the serratus anterior. It was a favorite of old-school bodybuilders, who believed high-rep pull-overs helped build a V-taper shape in the torso.
Stretches and strengthens both the chest and latissimus dorsi muscles
Helps build overhead shoulder mobility
Can be done in classic hypertrophy rep ranges of 8-12, or up to 20 reps per set