No real stabilizing muscles are activated; the machine acts as a stabilizer. It provides assistance to your pec major during the pec deck flye by keeping your shoulders from shrugging upward. How to Do Chest Fly Exercises on a Machine Step-by-Step Instructions: To use the pec deck, one ...
Here’s how to target each of the pectoral muscles to ensure you achieve the size and development you want. MOVE ACROSS MIDLINE Let’s kick things off with easily the most important thing you should be doing on chest day: moving the weights across your center line. ...