The dumbbell pullover is an arcing overhead move that stretches and works the chest and lats together across a big range of motion.
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Get FormTwin — free on the App StoreBoth. The dumbbell pullover works the chest (pectoralis major) and the lats simultaneously as the arm moves through a big overhead arc. Which one you feel more depends on your elbow position and how much you focus on each.
It builds the chest and lats through a long stretch, expands the range of motion of the upper body, and adds a different stimulus than pressing or rowing. It's also a classic move for the serratus and rib-cage expansion.
Yes, if you keep the range comfortable and don't force a deep stretch with heavy weight. Lower only as far as your shoulder mobility allows, keeping a slight bend in the elbows.
This guide is general fitness information, not medical advice. Muscle involvement varies with form, grip and individual anatomy. Consult a professional before starting a new program.