isolation chest
Dumbbell Chest Fly
chest · shoulders
dumbbell · bench · intermediate
How to do it
- 1Lie on a flat bench with a dumbbell in each hand, arms above your chest and elbows slightly bent.
- 2Open your arms out to the sides until your upper arms are roughly level with the bench, then bring them back together.
What to think about
- Keep the small bend in your elbows fixed. This is one movement at the shoulder, not two.
- Stop at the point where your chest is stretched, not at the point where your shoulders are.
What usually goes wrong
- Going far heavier than the movement allows and turning it into a wide, bent-arm press.
Worth knowing
- Marked intermediate on purpose. Free weights leave the shoulder to hold the bottom position on its own, so start light and stop the set with reps left. The machine and cable versions ask less of the joint.
Watch it
Instead of this
What the cautions rest on
The safety points above come from these, not from house opinion.
- Strength and muscle gain require progressively increasing demand over time.
- Weight training carries a low injury rate compared with most field and contact sports.
- Holding your breath through a heavy rep raises blood pressure sharply, which matters most for people carrying cardiovascular risk.
- Free weights carried over the head or trunk need a spotter or a catch mechanism, and equipment needs checking before it is loaded.
Who checked this
Nobody qualified has. These are standard coaching points and ordinary gym safety, written down: how to set the thing up, what to control, and when to stop a set. They are not a clinical opinion and no physiotherapist or strength coach has read them back. If they disagree with somebody who can actually see you lift, believe that person.