Chest Fly Guide: Dumbbell, Cable and Band Flies

Presses build the foundation of a strong chest, but flies are a useful second exercise. They train one of the chest's main jobs, bringing your arms across your body, with the triceps doing much less of the work. That makes them a good way to add chest-focused volume without extra strain on your elbows.

This guide covers how to do dumbbell, cable and band flies safely, how many sets and reps to use, and where they fit in your chest routine.

What flies do

Your chest muscles have two main jobs: pushing your arms forward (as in a press) and bringing your arms across and in front of your body (as in a hug). Flies focus on the second.

Because your elbows stay at a fixed, slight bend, the chest does most of the work, rather than sharing it with the triceps. Flies aren't better than presses, and they shouldn't replace them. Think of them as a complementary exercise once your main press is in place. The complete chest-training guide explains how presses and flies work together.

And, as with all chest training, flies build muscle but don't burn chest fat. See why you can't spot-reduce chest fat.

Dumbbell fly

Set-up: Lie on a flat bench with a light dumbbell in each hand, arms extended above your chest, palms facing each other. Keep your feet flat on the floor and your shoulder blades gently pulled back.

The movement:

1. With a soft bend in your elbows, lower the dumbbells out to the sides in a wide arc.
2. Stop when you feel a good stretch across your chest, usually when your upper arms are roughly level with your body. Don't force it lower.
3. Bring the dumbbells back up along the same arc, as if hugging a large tree, until they're above your chest.

Key points:

• The elbow angle stays the same throughout. If it bends more on the way down and straightens on the way up, it's turned into a press.
• Use much lighter weights than you press with. Flies put a lot of leverage on the shoulder joint.
• Control the bottom of the movement. Don't let the weights drop into the stretch.

Incline dumbbell fly: the same movement on a bench set at 30 to 45 degrees, which shifts more emphasis to the upper chest. Upper chest exercises covers this in more detail.

Cable fly

Cables keep tension on your chest throughout the movement, including at the end, where dumbbell flies get easy.

Set-up: Set both pulleys at about shoulder height, take a handle in each hand and step forward into a staggered stance, arms out to your sides with a soft elbow bend.

The movement: Bring your hands together in front of your chest in a wide arc, squeeze briefly, then let your arms return under control until you feel a stretch.

Angle variations:

A pec deck machine works in a similar way and is very easy to learn. It's a good option for beginners at the gym.

Can flies target the "inner chest"? Inner chest exercises explains what's realistic.

Band fly

A resistance band anchored behind you at chest height lets you do flies at home.

Set-up: Anchor a band securely in a door or around a sturdy post. Hold a handle in each hand, facing away from the anchor, arms out to your sides.

The movement: Bring your hands together in front of you in a wide arc, pause, then return slowly.

Band tension is highest at the end of the movement, where your hands meet, which suits flies well. Check the band for wear before each session and make sure the door can't be opened. Resistance band chest workout has more on setting bands up safely.

Sets, reps and where flies fit

• Do flies after your main press, as the second or third chest exercise.
• 2 to 3 sets of 10 to 20 reps works well. Flies suit moderate to higher reps with lighter weights.
• Rest 60 to 90 seconds.
• End each set with one to three good reps in reserve. See reps in reserve explained.

A simple example:

That's about 7 hard chest sets in one session. Two sessions like this a week gives most beginners plenty of chest work. The dumbbell chest workout offers a full home option.

How to progress flies

Flies are an exercise to progress slowly. Add reps first, then weight in the smallest steps available. With cables and bands, slowing the return or pausing at the squeeze also makes them harder. Avoid jumping to heavy weights. Large jumps on flies tend to turn them into awkward presses and increase strain on the shoulder.

The high-to-low cable fly is one of the best options in lower chest exercises.

Common mistakes

• Going too heavy, which usually causes the elbows to bend and the shoulders to take the strain.
• Going too deep. A comfortable stretch is enough. Forcing extra range adds risk without clear benefit.
• Letting your shoulders roll forward at the top. Keep your chest up and shoulder blades gently back.
• Doing flies instead of presses. Presses should come first.

The bottom line

Flies are a useful second chest exercise that trains your chest with less triceps involvement than presses. Use light weights, a soft and fixed elbow bend, and a controlled range, and add them after your main press for two or three sets. Combined with presses, steady progression and an overall fat-loss plan, they help build a fuller, firmer chest.