Exercise guide
Kettlebell Fly
- Intermediate
- Isolation
- Rep-based
- Chest
- Shoulders
The Kettlebell Fly is an isolation movement that targets the pectorals and anterior deltoids, using the unique weight distribution of kettlebells to provide a deeper stretch and increased stability challenge compared to dumbbells.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Lie flat on a bench with your feet firmly planted on the floor for stability.
- Hold a kettlebell in each hand with the bells resting on the back of your forearms.
- Press the kettlebells up over your chest with palms facing each other and a slight bend in the elbows.
How to do it
- Inhale and slowly lower the kettlebells in a wide arc out to your sides until you feel a deep stretch in your chest.
- Maintain the slight bend in your elbows throughout the descent, ensuring the weights do not drop below shoulder level.
- Exhale and contract your pectorals to bring the kettlebells back to the starting position following the same wide arc.
- Maintain a controlled tempo, focusing on a 3-second lowering phase and a 1-second lifting phase.
Form checklist
- Keep a slight, fixed bend in the elbows to protect the joints.
- Ensure your shoulder blades are retracted and pressed into the bench.
- Avoid clashing the kettlebells together at the top to maintain constant tension.
- Keep your feet flat on the floor to prevent your lower back from over-arching.
Pro tips
- Imagine you are hugging a large barrel to maintain the correct arc and maximize pectoral engagement.
- Focus on the weight of the kettlebell pulling your hands outward to enhance the stretch at the bottom of the rep.
- Squeeze your chest muscles intensely at the top of the movement for a peak contraction.
Make it harder
- Add a 2-second pause at the bottom of the movement to increase time under tension in the stretched position.
- Incorporate a '1.5 rep' style by going all the way down, halfway up, back down, and then all the way up.
Frequently asked
- What muscles does the kettlebell fly work?
- The kettlebell fly primarily targets the pectorals, and also works the triceps as secondary muscles.
- What equipment do you need for the kettlebell fly?
- The kettlebell fly uses kettlebell.
- Is the kettlebell fly good for beginners?
- The kettlebell fly is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.