WhatWorksWhat.
Chest

Dumbbell Fly

Pure pec stretch. If you feel it in the front of the shoulder, stop and reduce range.

Complexity · Mediumhypertrophyintermediate+DumbbellsBench
  • Chest
  • Chest - Middle (sternal)
  • Chest - Upper (clavicular)
  • Front delts
  • Upper (clavicular)
  • Middle (sternal)
  • Lower (costal)

PrimarySecondary

What it hits

Parts of the target muscle.

  • Upper (clavicular)

    Hit

    Targeted on incline pressing/flys.

  • Middle (sternal)

    Hit

    Targeted on flat pressing.

  • Lower (costal)

    Not hit

    Targeted on decline pressing and dips.

The movement

Get it right, not roughly right.

Optimal form

7:48· Buff Dudes Workouts

How To Perform Dumbbell Flys on a Flat Bench | Chest Exercise Tutorial

Dumbbell Fly bottom position with arms opened wide, slight elbow bend, and chest stretched on a flat bench.
Start
Dumbbell Fly finish position with dumbbells brought together above the chest and elbows softly bent.
Finish

Slight elbow bend, lock that bend the entire rep. Lower with control until you feel a chest stretch - not a shoulder pull. Hug the dumbbells back together.

Common mistakes

  • Going too heavy - flies are an isolation, not a press.
  • Straightening the arms at the bottom - straight to a torn pec.

Where you should feel it

Pure pec stretch. If you feel it in the front of the shoulder, stop and reduce range.

Injury risk · 4/10

Variations

Same movement, moved emphasis.

Ranked by how directly each variation still trains chest. 80%+ means the target barely changes. Below 60%, the emphasis has meaningfully shifted — useful for variety, but less precise for the specific part. The label calls it at a glance.

  • Cable fly low-to-high

    Targets upper chest.

    95% on target

    On target

    Same target, minor adjustment.

  • Cable fly high-to-low

    Targets lower chest.

    90% on target

    On target

    Lower chest.

  • Pec deck

    Machine-guided.

    85% on target

    On target

    Same target, minor adjustment.

Compare with another exercise

Cool-down

Worked it. Walk it back down.

A couple of minutes here pays back in soreness avoided tomorrow. Browse the full library.

  • Doorway Pec Stretch

    Forearm against doorway, elbow at shoulder height. Step the same-side foot through. 45s per side.

    ChestFront delts

  • Cobra Pose

    Lying face-down, hands under the shoulders. Press the chest up by extending the back. Hips stay on the floor. 30s. Antidote to a long day of crunches and sitting.

    AbsFront deltsChest

  • Downward Dog

    Hands and feet on the floor, hips in the air making an inverted V. Press the heels toward the floor. Pedal the heels alternately for a stronger calf stretch. 45s.

    CalvesHamstringsLatsFront delts