Before you lower the dumbbells, set the bend in your elbows you intend to hold for the whole set — usually a soft, fixed angle — and don't let it change as you go. Losing that bend partway down turns the fly into a half-press and shifts the work off your chest. Lying on a bench, lower the dumbbells out to the sides in a wide arc until you feel a stretch across your chest, keeping your wrists stacked over your elbows. Bring them back together in the same arc, squeezing your chest at the top without knocking the dumbbells into each other. Keep the motion slow — this is a stretch-and-squeeze exercise, not a fast one.

PLANS THAT USE IT 14

Bro Split5× / week · advanced

Full Body 3x3× / week · beginner

Chest Builder — Pressing Angle Mastery4× / week · intermediate

Upper/Lower Dumbbell Split — Balanced Build4× / week · intermediate

Dumbbell Push / Pull / Legs — Hypertrophy (V2)3× / week · intermediate

Dumbbell Bro Split — Classic (V1)5× / week · beginner

Dumbbell Bro Split — Hyper (V2)4× / week · intermediate

Upper / Lower ×3 — 6-Day Volume6× / week · advanced

Bro Split — 6-Day Body Part Blast6× / week · intermediate

Upper / Lower ×3 + Arms — 7-Day7× / week · advanced

Bro Split — 7-Day Daily Body Part7× / week · intermediate

Dumbbell Full Body — Total (V2)2× / week · intermediate

Arm Day — Curl & Press Variation4× / week · intermediate

Muscular Endurance — High-Rep Strength4× / week · intermediate