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Dumbbell Fly

Dumbbell Fly

The dumbbell fly is a flat-bench chest exercise where you open and close your arms in a wide arc with a slight bend in the elbows.

ChestDumbbellIsolationBoth sidesFlat bench

How to do a dumbbell fly

  1. Lie on a flat bench and press two dumbbells over your chest, palms facing each other.
  2. Bend your elbows slightly and keep that bend fixed for the whole set.
  3. Open your arms out to the sides in a wide arc until you feel a stretch across your chest.
  4. Bring the dumbbells back together over your chest along the same arc.

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Tips

  • Use a lighter weight than you press so you can control the wide arc.
  • Stop where your upper arms reach about bench level.

Common mistakes

  • Bending and straightening the elbows, which turns it into a press.
  • Dropping the weights too low behind the body line.

Dumbbell Fly muscles worked

Main: Chest; also: Front delts.

Dumbbell Fly: main chest; also front-deltsFrontBack
MainAlso worked

Sets and reps

3 × 10–15

Alternatives

FAQ

Dumbbell fly or cable fly?

Both train the chest; a cable keeps tension at the top where the dumbbell fly gets easy.

How heavy should a dumbbell fly be?

Light enough to keep your elbow angle fixed for 10–15 reps.