Elbows bending and straightening
Keep the same small elbow bend so the dumbbell fly does not become a press.
Lying Chest Fly
Lying Chest Fly targets the chest through a wide hugging motion while the elbow angle remains nearly fixed.
- Primary muscle
- Chest
Primary musclesPectoralis major
Secondary musclesAnterior deltoids, Biceps brachii, Serratus anterior
- Equipment
- Dumbbells
How to perform Lying Chest Fly
Follow the sequence in order, paying attention to the starting position, movement path, and finish described in each step.
For Lying Chest Fly, lie with the head and upper back supported, hold a dumbbell above each side of the chest, and keep the elbows softly bent.
Keep the wrists straight and fix the elbow angle before the arms begin to travel.
Sweep the upper arms forward in a wide hugging arc while keeping the elbow angle nearly fixed.
Finish when the hands or handles meet in front of the chest without the shoulders rolling forward.
Open the arms slowly to a comfortable chest stretch and keep the load under control.
Common Lying Chest Fly mistakes
Lowering too far
Stop before the shoulders roll forward or the front of the shoulder becomes uncomfortable.
Dumbbells drifting toward the head
Keep the weights travelling in a wide arc centred over the chest.
Dropping the return
Open the arms slowly and keep the shoulders supported against the bench.
When to modify or choose another exercise
- Elbows bending and straightening: Keep the same small elbow bend so the dumbbell fly does not become a press.
- Dumbbells drifting toward the head: Keep the weights travelling in a wide arc centred over the chest.
- Stop when the exercise produces sharp, catching, radiating, or increasing joint pain rather than the expected muscular effort.
- Alternative Supported Lying Chest Fly: Hold a stable support or use an easier setup while learning the movement.
How to use Lying Chest Fly in a training program
Where it fits in a session
Place Lying Chest Fly after bench, incline, or machine presses so chest and shoulder fatigue does not limit the heavier pressing work.
How often to use it
Use one or two times per week and count the sets with other direct chest work.
Starting rep ranges by goal
| Goal | Sets | Reps or time | Rest | Effort and execution |
|---|---|---|---|---|
| Strength accessory | 2–4 | 6–10 | 75–150 sec | Leave 2–3 controlled reps in reserve |
| Muscle growth | 2–4 | 8–15 | 60–120 sec | Usually 1–3 clean reps in reserve |
Pairing and sequencing
- Use Lying Chest Fly after Incline Bench Press or Lying Dumbbell Chest Press.
- Pair it with Straight Bar Tricep Extension when shoulder position remains stable.
Scale the movement
Regressions and progressions for Lying Chest Fly
Start with an easier option
Supported Lying Chest Fly
Hold a stable support or use an easier setup while learning the movement.
Reduced-range Lying Chest Fly
Use a shorter pain-free range and expand it only as control improves.
Progress when form is repeatable
Tempo Lying Chest Fly
Slow the lowering phase without changing the start, finish, or joint alignment.
Paused Lying Chest Fly
Add a brief pause at the hardest controlled position before increasing load.
References
- Mayo ClinicChest Press with Dumbbells ↗
- Mayo ClinicWeight Training: Do's and Don'ts of Proper Technique ↗
- American College of Sports MedicineACSM Resistance Training Guidelines Update ↗
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