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  3. Exercises
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  5. Chest
  6. /
  7. Lever Stack Seated Single Arm Chest Press

Exercise guide

Lever Stack Seated Single Arm Chest Press

  • Intermediate
  • Compound
  • Rep-based
  • Chest
  • Shoulders
  • Upper arms
  • Waist

This unilateral compound movement targets the pectorals, deltoids, and triceps while allowing you to correct muscle imbalances and maximize chest contraction through a stable, fixed path.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Lever Stack Seated Single Arm Chest Press demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Pectorals

Secondary

  • Abs
  • Serratus anterior

Equipment

  • Leverage machine

Setup

  1. Adjust the seat height so the machine handles align with your mid-to-lower chest level.
  2. Sit firmly with your back pressed against the pad and your feet planted wide on the floor for stability.
  3. Grasp one handle with a firm grip, ensuring your elbow is positioned slightly below your shoulder.
  4. Place your non-working hand on your thigh or the side of the seat to maintain a square torso.

How to do it

  1. Exhale as you press the handle forward in a controlled arc until your arm is nearly straight.
  2. Squeeze your chest at the peak of the movement for one second, avoiding a forceful lockout of the elbow.
  3. Inhale as you slowly lower the weight back toward your chest, maintaining constant tension on the muscle.
  4. Perform the movement with a 2-0-2-1 tempo (2 seconds out, 0 pause, 2 seconds back, 1 second squeeze).

Form checklist

  • Keep your shoulder blades retracted and pinned against the backrest throughout the set.
  • Avoid rotating your torso or lifting your hip off the seat to help move the weight.
  • Ensure your wrist remains neutral and does not bend backward under the load.
  • Keep your feet flat on the ground to prevent swaying or loss of balance.

Pro tips

  • Focus on driving your bicep toward your sternum at the top of the rep to maximize pectoral shortening.
  • Use your non-working hand to touch the working pectoral muscle to enhance the mind-muscle connection.

Make it harder

  • Implement a 3-second eccentric (lowering) phase to increase time under tension.
  • Add a brief pause at the bottom of the rep just before the weight stack touches to keep the muscle loaded.

Frequently asked

What muscles does the lever stack seated single arm chest press work?
The lever stack seated single arm chest press primarily targets the pectorals, and also works the abs and serratus anterior as secondary muscles.
What equipment do you need for the lever stack seated single arm chest press?
The lever stack seated single arm chest press uses leverage machine.
Is the lever stack seated single arm chest press good for beginners?
The lever stack seated single arm chest press is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • Air Punches MarchBeginner · calves, pectorals, and quadriceps
  • Alternate Front Kick In Place With Arm CirclesBeginner · abs, calves, deltoids, and pectorals
  • Archer Push-UpAdvanced · pectorals
  • Aztec Push UpIntermediate · pectorals, serratus anterior, and triceps

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

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