Upper body · Mobility

DB Fly — stretch hold

Pec length at end range under load — the tissue that shortens on everyone who benches and presses

Technique

How to do it well

The set-up and the rep in full, then the cues the app shows on the exercise card — the short version, for the moment you are standing in front of the bar.

Set-up

Lie on a flat bench with a light dumbbell in each hand, pressed up over the chest, palms facing each other and a slight bend in the elbows. Feet flat, shoulder blades pulled back into the bench.

The rep

Open the arms out to the sides in a wide arc over five seconds, keeping the soft elbow bend fixed. Stop where the chest pulls, usually with the upper arms near the height of the bench, and hold there for twenty-five seconds with the shoulder blades back. Then bring the arms back up together the way they came, under control.

On the exercise card

  • Soft elbows, wide arc
  • Hold where the chest pulls, shoulder blades back
  • Come out under control
Tempo
5s to lower
This is general information, not medical advice. Train Smart gives training and nutrition guidance for healthy athletes. It is not a substitute for a doctor, physiotherapist or accredited dietitian. If you have an injury, a medical condition, or you are unsure whether an exercise is right for you, get it checked first. Every recommendation on this site is sourced.
Common mistakes

What goes wrong, and the fix

What goes wrongThe fix
Going too heavyThis is a stretch under load, not a fly for reps. Heavy enough to pull you into the stretch, light enough to hold still.
Straightening or bending the elbows as you lowerLock the soft bend in place before you start.
The shoulder blades lifting off the benchPin them back. If they come forward, the stretch moves into the front of the shoulder.
Scaling

Make it easier, or harder

Easier
Lighter dumbbells, a shorter hold, or a doorway chest stretch.
Harder
A slightly longer hold, or an incline bench to shift it towards the upper chest.
In the program

How Train Smart prescribes it

The sets and reps below are the authored starting point. The actual weight you see is calculated from your own last top set and the week you are in within your four-week block.

The chest shortens on anyone who does a lot of pressing, which is everyone in the bodybuilding program. It is in the program's upper-body prehab rotation, so the pecs are taken to length in the same weeks they are being pressed.

ProgramSessionSets × repsLoad
BodybuildingPush — Chest, Shoulders, Triceps2 × 25s holdLight DBs

How the weight is calculated →

At a glance

What it trains, and who trains it

DB Fly — stretch hold — anatomy diagram showing the muscles worked: Chest. Front and back view.
DB Fly — stretch hold — Chest
Muscles worked
Chest
Region
Upper body
Classified as
Mobility
Prescribed in
bodybuilding
Alternatives

If you cannot do this one

Rack taken, kit missing, or it does not suit you. These are the swaps the app offers, matched by movement pattern and body region — each with the reason it is a fair substitute.

AlternativeWhy it works as a swap
Bench PressMax horizontal pressing strength
DB Bench PressBigger range, even sides
Incline DB PressUpper-chest + front-delt bias
Decline Bench PressLower-chest emphasis, shoulder-friendly
Floor PressShoulder-friendly, lockout strength
Spoto PressPause 1 inch above chest — tightness + control

This exercise, in a program that knows why it is there

Train Smart puts this movement in the right session, at the right point in your block, at a weight calculated for you — and swaps it automatically if you do not have the kit.

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Your first month is free, with nothing to pay today. Then A$24.99/month, cancel any time.