Back Flyes - With Bands
Back flyes with bands train the rear of your shoulders and the muscles between your shoulder blades, the exact areas that pressing and desk hours leave behind. Holding a band anchored in front of you, you sweep your arms wide like opening a pair of curtains against resistance. All you need is one band and a door or post, which makes it the easiest rear-delt work to do anywhere.
Why it works
The rear delts and mid back are pulling muscles, and this movement gives them a pull with nothing else in the way: arms nearly straight, band resisting, shoulder blades squeezing together at the end of every rep. Bands also pull hardest exactly where these muscles are strongest, at the widest point of the sweep, so the squeeze lands right where you want to feel it. Training this area balances all the pressing and sitting your week already contains, and shoulders that pull as well as they push tend to be shoulders that last.
Set up
- Anchor the band at chest height around a post, railing, or a door anchor, and check it's secure.
- Hold one end in each hand and step back until the band is taut with your arms extended forward.
- Stand tall, feet hip-width, knees soft, shoulders down away from your ears.
How to do it
- Start with arms extended in front of you at chest height, palms facing each other.
- Keep a slight, fixed bend in your elbows for the whole movement.
- Sweep both arms out and back in a wide arc, like opening curtains.
- Finish with your arms out to your sides and your shoulder blades squeezed together.
- Hold that squeeze for a full second.
- Return your arms forward with control, resisting the band the whole way back.
Form cues
- Open like curtains, wide and unhurried.
- Elbows locked in a soft bend; no biceps curling.
- Finish each rep by pinching a coin between your shoulder blades.
- Shoulders stay down; ears and shoulders are not friends here.
Breathing: Exhale as you sweep the band open, inhale as your arms return forward.
Common mistakes
Shrugging the shoulders up toward the ears as the arms open.
Fix: Set your shoulder blades down before the first rep and pick a lighter band if they keep creeping up.
Bending and straightening the elbows so the movement becomes a row-curl hybrid.
Fix: Freeze the elbow angle and move only at the shoulders; the arc should look identical every rep.
Letting the band snap the arms back together between reps.
Fix: Take two slow seconds on the return; the resisted way back is half the exercise.
Grabbing so much band tension that the torso twists and leans to help.
Fix: Step closer or use a lighter band; this movement rewards strict reps at modest tension, not heaving.
How to program it
- Rear delts love volume: 3 sets of 15 to 20 reps with a one-second squeeze, two or three days a week.
- Adjust difficulty by stepping further from the anchor or doubling the band, not by loosening your form.
- It slots anywhere: warm-up before pressing, superset partner between bench sets, or finisher on an upper day.
- A simple weekly balance check: for every pressing session, make sure something pulls, and this counts.
Safety notes
- Inspect the band for nicks and the anchor for slippage before each session; a snapping band at face height is this exercise's only real hazard.
- Work in a smooth, pain-free arc; if the shoulder complains at the widest point, shorten the sweep.
Exercise profile
- Force
- Pull
- Mechanics
- Compound
- Category
- Strength
Frequently asked questions
What do band back flyes work?
The rear deltoids on the back of your shoulders, plus the muscles between your shoulder blades in the middle back, with the triceps helping keep the arms extended. The band's pull is what your shoulder blades squeeze against.
How many reps of band flyes should I do?
These muscles respond to higher reps: 15 to 20 per set, for 3 sets, with a deliberate one-second squeeze at the end of each rep. If 20 feels easy, add distance from the anchor before adding sets.
Band back flyes vs face pulls: which is better?
They cover very similar ground. Face pulls add more rotation work and suit a cable station; band flyes need only a band and travel anywhere. Pick the one you'll actually do consistently, or alternate them week to week.
Can band flyes fix rounded shoulders?
No exercise fixes posture by itself, but strengthening the rear shoulders and mid back gives you the muscle to hold a taller position comfortably. Pair the reps with breaks from long sitting and the effect adds up over months.