Training action of the Pec fly/rear delt:
1.Align the handle with the deltoid muscle.Adjust a suitable weight, and adjust the height of the chair so that the handles are at the same height as your shoulders after you sit down. Hold the handle with palms facing inward. This is your initial position.
2. Do semi-circular exercise, pull your hands back to both sides, and contract the posterior bundle of your deltoid muscle.
3. Keep your arm slightly bent during exercise, and slowly pull the handle back to the initial position.
4. The above is a complete action. Repeat the action as many times as recommended.
