Decline Dumbbell Fly
Also known as: decline dumbbell flye
In SetGrip: Dumbbell Fly (Decline)
- Secondary muscles
- Delts
- Body part
- Chest
- Position
- Lying
- Laterality
- Bilateral (both sides together)
- Category
- Strength
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Tilting the bench head-down shifts the fly's stretch toward the lower pec fibers and shortens the range at the top, where dumbbells stop providing tension anyway. Hook your feet in before starting, and treat it as a moderate-rep movement, 10 to 15, since wrestling heavy dumbbells into position on a decline gets awkward fast.
How to do the Decline Dumbbell Fly
- Lie on a decline bench with your feet secured and your head lower than your hips.
- Hold a dumbbell in each hand with your palms facing each other and your arms extended above your chest.
- Lower the dumbbells out to the sides in a wide arc until you feel a stretch in your chest.
- Pause for a moment, then squeeze your chest muscles to bring the dumbbells back to the starting position.
- Repeat for the desired number of repetitions.
Tip: Imagine hugging a barrel rather than pushing a weight.
Muscles worked
Primary
Pectorals · Chest
On chest flies and cable crossovers the pecs pull the arms together in an arc and should feel a deep stretch at the bottom and a hard squeeze at the top.
Secondary
- Delts — Rear delt flies work the back of the shoulder as the arms swing wide, and the front delt assists on any chest fly.
Common mistakes
- Elbows bending as you tire — this turns a fly into a press; set the elbow angle at the start and keep it constant for the whole set.
- Going too heavy — flies are a stretch and squeeze movement, not a strength lift; you should be able to pause at the bottom without the shoulders rolling forward.
- Stopping short of the stretch — let the arms open until you feel the chest or rear delts lengthen, then bring them back under control.
- Not squeezing at the finish — the last few inches are where the muscle shortens most, so hold the contraction for a count before opening again.
Where it fits in a workout
Flies are an isolation movement for after the pressing or rowing is done. Pair a chest fly with a rear delt fly for a balanced superset.
How many sets, how heavy and how hard: see what the ACSM position stands support.
Variations and alternatives
Similar exercises
Without dumbbell
When to talk to someone
- Chest discomfort, feeling faint or lightheaded, or trouble breathing during or after exercise can be signs of a heart attack. In the US, call 911 right away; elsewhere, call your local emergency number.
- Heart, metabolic or kidney disease, or symptoms like these when you are active: talk to your doctor before you start or step up training.
- Pregnant: ask your obstetric care provider which exercise suits you.
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More exercises
Sources
- ACSM position stand on exercise quantity and quality (Garber et al., 2011)
- ACSM preparticipation health screening (Riebe et al., 2015)
- ACOG Committee Opinion No. 804 on exercise in pregnancy (2020)
- CDC: About Heart Attack Symptoms, Risk, and Recovery (2024)
Sources checked on October 17, 2026. Full citations are in the exercise library.
Animation and exercise data: ExerciseDB, licensed to SetGrip. General information, not medical or coaching advice.