Exercise library · Core
Machine Crunch.
Weighted machine crunch that loads the abs through trunk flexion.
Also known as: Ab Crunch Machine, Seated Crunch Machine
BeginnerMachine
The numbers
Sets
3–4
Reps
10–15
Rest
45–75 s
The play-by-play
How to do it.
- Step 01
Adjust the seat and grip the handles or pads
- Step 02
Set the chest against the pad
- Step 03
Crunch the torso forward against the resistance
- Step 04
Round the spine to contract the abs
- Step 05
Squeeze at the bottom
- 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
Common questions
Questions, answered.
- What is the Machine Crunch?
- Weighted machine crunch that loads the abs through trunk flexion.
- What muscles does the Machine Crunch work?
- The Machine Crunch primarily works your rectus abdominis.
- What equipment do I need for the Machine Crunch?
- You need a machine to perform the Machine Crunch.
- How many sets and reps should I do for the Machine Crunch?
- A typical prescription for the Machine Crunch is 3–4 sets of 10–15 reps. Rest about 45–75 seconds between sets.
- Is the Machine Crunch good for beginners?
- Yes. The Machine Crunch is a beginner-friendly movement, so it is a good choice when you are starting out, as long as you keep the load light and focus on form.
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