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  5. Core & Abs
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  7. Lever Total Abdominal Crunch

Exercise guide

Lever Total Abdominal Crunch

  • Beginner
  • Compound
  • Rep-based
  • Waist

The Lever Total Abdominal Crunch utilizes a dual-action machine to simultaneously flex the spine and tuck the hips, providing a comprehensive workout for the entire rectus abdominis and obliques. This guided movement allows for consistent tension and progressive overload that is difficult to achieve with floor-based crunches.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Lever Total Abdominal Crunch demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Abs
  • Obliques

Secondary

  • Erector spinae

Equipment

  • Leverage machine

Setup

  1. Adjust the seat height so the machine's pivot point is aligned with your natural waistline.
  2. Sit firmly against the back pad and place your feet or shins securely behind the lower leg rollers.
  3. Grasp the handles behind or beside your head, keeping your elbows tucked forward and shoulders relaxed.

How to do it

  1. Exhale and contract your abdominals to pull your ribcage toward your pelvis while simultaneously pulling the leg lever upward.
  2. Squeeze your core forcefully at the point of maximum contraction for a one-second pause.
  3. Inhale as you slowly return to the starting position, stopping just before the weight plates touch to maintain constant tension.
  4. Maintain a controlled tempo, typically two seconds for the crunch and two seconds for the return.

Form checklist

  • Keep your lower back pressed into the pad at the start of each rep.
  • Focus on curling your spine into a 'C' shape rather than just hinging at the hips.
  • Avoid pulling with your arms or neck; your hands should only act as anchors.
  • Ensure the movement is driven by the midsection, not by swinging your legs.

Pro tips

  • Initiate the rep by performing a slight posterior pelvic tilt to pre-engage the lower abdominals.
  • Visualize trying to touch your sternum to your pubic bone to maximize the shortening of the abdominal fibers.

Make it harder

  • Add a three-second isometric hold at the peak of the contraction on every rep.
  • Slow the eccentric (return) phase to four seconds to increase time under tension.

Frequently asked

What muscles does the lever total abdominal crunch work?
The lever total abdominal crunch primarily targets the abs and obliques, and also works the erector spinae as secondary muscles.
What equipment do you need for the lever total abdominal crunch?
The lever total abdominal crunch uses leverage machine.
Is the lever total abdominal crunch good for beginners?
Yes. The lever total abdominal crunch is a beginner-friendly movement and a strong foundation to build on.

Related exercises

  • 3/4 Sit-UpBeginner · abs and obliques
  • 45 Degree Bicycle Twisting CrunchIntermediate · abs and obliques
  • 45 Degree Lean Back Alternate Knee RaiseBeginner · abs and obliques
  • 45 Degrees Arms PlankIntermediate · abs, deltoids, obliques, and pectorals

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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