Exercise library · Core

Machine Crunch.

Weighted machine crunch that loads the abs through trunk flexion.

BeginnerMachine
Machine Crunch
The numbers
Sets
3–4
Reps
10–15
Rest
45–75
Muscles
Primary
Rectus abdominis
The play-by-play

How to do it.

  1. Step 01

    Adjust the seat and grip the handles or pads

  2. Step 02

    Set the chest against the pad

  3. Step 03

    Crunch the torso forward against the resistance

  4. Step 04

    Round the spine to contract the abs

  5. Step 05

    Squeeze at the bottom

  6. Step 06

    Return slowly to the stretch

What separates good from great

Pro cues.

  • Move from the abs, not the hips

  • Control the return phase

  • Avoid pulling with the arms