The dumbbell fly isolates the chest muscles through a wide, arcing arm movement while lying on a flat or slightly inclined bench, complementing pressing exercises with a stretch-focused chest movement.
Resistance exercises can be valuable for strength and function, but technique, load, training history and individual health conditions matter. People with current shoulder symptoms or recent surgery may require an individually adapted programme.
Inhale as you lower the dumbbells out to the sides, exhale as you bring them back together.
Sets
2-3 sets
Reps
10-12 repetitions
Duration
Under 15 minutes
Rest
60-90 seconds between sets
Estimated completion time: Under 15 minutes for the full set of 2-3 sets, including rest between sets.
These are general, real starting points — not an automatic prescription for every user.
Use lighter dumbbells, or reduce the range of motion by stopping the descent earlier.
Increase the load gradually within a comfortable range, or slow the tempo of the lowering phase.
Primary Muscles
Pectoralis major
Secondary Muscles
Anterior deltoids
Movement Pattern
isolation
Choose a genuinely light load, since the stretched bottom position places real strain on the shoulder joint. Do not lower beyond a comfortable range. Stop immediately if you feel sharp shoulder pain, pinching, or instability.
Spine Considerations
Performed lying on a bench, this exercise places minimal direct load on the spine; keep the lower back gently in contact with the bench rather than excessively arched.
Joint Considerations
This exercise loads the shoulder joint significantly at the bottom, stretched position. Choose a light load, and stop before you feel pinching or instability at the front of the shoulder.
Suitability depends on the individual — this list isn't an absolute contraindication for everyone in these categories.
Goals
Same movement pattern, different equipment — useful if you don't have what this exercise calls for.
How often can I do this exercise?
A common starting point is 2-3 sessions per week with at least a day of rest for the same muscle group in between, but this depends on your overall programme, recovery, and goals — start conservatively and progress gradually.
What if I don't have a pair of dumbbells?
Try the regression noted above, or browse the Exercise Explorer for a similar movement using different equipment.
Is this exercise safe if I have a current injury or health condition?
This exercise carries specific cautions for some people (see "Who Should Be Cautious?" above) — suitability depends on your individual situation, so check with your doctor or physiotherapist if any of those apply to you.
Is this exercise appropriate for a beginner or intermediate exerciser?
This is classified as intermediate. If it feels too demanding at first, use the regression above and progress once it feels controlled.
References