Pectoral · Pec deck

Discarded butterfly — Pec deck

Muscles requiredPectoralis major, sternal head · Pectoralis major, abdominal head · Anterior deltoid

Description

Machine-guided fly to isolate the pectorals with a stable trajectory.

01 · Setup

Set up the movement

  • Adjust the seat to align the elbows with the machine axle.
  • Chest against the backrest, shoulders low, shoulder blades stable.
  • Elbows aligned with the line of thrust.
  • Cuffs in line with the forearms on the handles.
02 · Execution

Perform the rep

  1. Bring your arms together, keeping your shoulders back.
  2. Contract without pushing your shoulders forward.
  3. Controls the return to the comfortable stretch.
Technique cue

Pectoral contraction without rolling the shoulders.

Common mistakes
  • forced range of motion in return
  • shoulders moving forward
  • tempo too fast
  • back coming off
Safety notes

Risks of poor execution

  • Returning too far can overload the front of the shoulder.
  • A sudden movement increases the risk of tendon damage.

In ShapeVision

Save your sets on this variant.

Add exercise

Choose this variant from the app library or replace an exercise in your program.

Save each set

Enter the load and repetitions made during the session.

Check your progress

Finds the historical, load, volume and estimated 1RM of this variant.

In the app

Follow this exercise in your sessions.

Record your shows, rehearsals and loads in ShapeVision.