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§ L · Exercises · ChestUpdated 6/2026

Pec Deck 1.5 reps

This builds your chest and improves squeezing strength. It also helps you feel your chest better in pressing movements.

Muscle group
Chest
Equipment
Machine
Exercise type
Isolation
Technique
Basic technique

Muscles worked

§ 01 · Muscles
Primary muscle
Chest
Supporting muscles
Shoulders

How to perform

§ 02 · Steps
  1. 01

    Adjust the pec deck seat height and the handle or forearm pad position so the handles are at mid-chest height and your elbows are slightly below shoulder level.

  2. 02

    Sit with your back firmly against the pad, brace your core, and keep your shoulder blades pulled slightly back and down.

  3. 03

    Grip the handles or place your forearms on the pads and bring your arms together under control in front of your chest, squeezing your chest hard at the peak contraction.

  4. 04

    Lower the weight only halfway back, then immediately bring your arms together again to a full contraction.

  5. 05

    Finally, return under control all the way to the starting position into a stretch, keeping the same elbow angle and chest position.

Beginner's guide

§ 03 · Guide
What it works

This builds your chest and improves squeezing strength. It also helps you feel your chest better in pressing movements.

What it should feel like

You should feel it in your chest, especially at the squeeze and stretch. It should not be felt mostly in your front delts or arms.

Most common mistake

A common mistake is letting the shoulders roll forward and losing chest tension. Keep your shoulder blades lightly back and down, move with control.

How to get started at the gym

§ 04 · SisuLift

Pec Deck 1.5 reps is ready to go in the SisuLift exercise library. The app builds you a program, suggests starting weights and shows this same animation during your workout at the gym.

  • ·A ready training program based on your goal
  • ·Starting weight suggestions and automatic progression
  • ·Set logging and rest timer at the gym
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SisuLift app workout view

Tips

§ 05 · Tips

Keep your chest up and avoid letting your shoulders roll forward so the load stays on your chest. Use a controlled lowering phase and end the set before your technique breaks down in the stretched position.

1.5 reps increase time under tension and emphasize chest contraction on the pec deck machine.

More exercises: Chest

§ 06 · Same muscles

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