How to do the Machine Crunch
Adjust the seat and sit with your back on the pad, holding the handles.
Hook your feet under the pads.
Curl your torso forward by contracting your abs.
Return slowly without letting the weights touch down.
Sets and reps
| Goal | Sets | Reps | Rest |
|---|---|---|---|
| Muscle growth | 2–4 | 10–15 | 1 min |
| Muscular endurance | 2–3 | 15–25 | 45 s |
When you hit the top of the rep range on every set, add 2.5 kg (5 lb) next session and work back up.
Starting points from training research. Stop each set 1–3 reps short of failure.
Muscles worked
Primary
The abs flex your spine and stop it from arching. Mix crunching moves (crunches, leg raises) with anti-extension work (planks, rollouts).
Alternatives
Same muscles, similar movement: swap in one of these if the Machine Crunch doesn’t suit your gym or your joints.
Train smarter
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- 4 day workout split: best options and a full programWhich 4 day workout split is best? Upper/lower, full body, torso/limbs and bro splits compared in brief, then a complete 4-day program with sets and reps.
