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Machine Crunch guide
The Machine Crunch is a beginner-level isolation machine lift that trains the Rectus Abdominis. Use it when you want more core work with machine. Keep the range honest, add load only when every rep looks the same.
What muscles does the machine crunch work?
The Machine Crunch primarily trains the Rectus Abdominis, with the core as the target group. Train it as part of a balanced core routine.
How do you do the machine crunch?
To do the Machine Crunch: adjust the seat so the machine's pivot matches the joint you are training. strap in if there is a pad, then start the machine crunch; move the load with the rectus abdominis. if another muscle takes over, shorten the range until rectus abdominis is doing the work; control the lowering half. a bounce at the bottom is a missed rep on the machine crunch; stop 1–2 reps before form breaks. add weight or a harder variation only after every working set looks the same.
- Adjust the seat so the machine's pivot matches the joint you are training. Strap in if there is a pad, then start the machine crunch.
- Move the load with the rectus abdominis. If another muscle takes over, shorten the range until rectus abdominis is doing the work.
- Control the lowering half. A bounce at the bottom is a missed rep on the machine crunch.
- Stop 1–2 reps before form breaks. Add weight or a harder variation only after every working set looks the same.
What are the most common machine crunch mistakes?
- Turning the machine crunch into a momentum drill. — Slow the first two seconds of the lowering half until the rectus abdominis stays tense.
- Cutting the range short to move more load. — Own the longest range you can keep tidy. Load comes after range.
- Letting the machine dictate sloppy setup. — Reset stance, grip and brace before every set, not after the first ugly rep.
Machine Crunch alternatives
Machine Crunch FAQ.
What muscles does the Machine Crunch work?
The Machine Crunch primarily targets the Rectus Abdominis, training the Core as the main muscle group.
Is the Machine Crunch a compound or isolation exercise?
The Machine Crunch is an isolation exercise — it focuses on one muscle, which is useful for targeting and bringing up weak points.
What equipment do I need for the Machine Crunch?
You need a machine. Difficulty is rated beginner.
What are good alternatives to the Machine Crunch?
Good core alternatives include Plank, Crunch, Side Plank.
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