Machines · Isolation
Ab crunch machine
Ab crunch machine mainly works your abs. It also helps your hip flexors.


Step by step
- Sit tall, feet under pads, hands on the handles.
- Exhale and curl your ribs toward your hips.
- Pause, then return slowly without dropping the weight.
What you should feel
A squeeze in your abs as your ribs curl toward your hips; your neck and lower back should not strain.
Common mistake
Pulling with your arms and legs instead of your abs; use lighter weight and curl from your midsection.
Sets and reps
- To build muscle: 3 to 4 sets of 8 to 12 reps, resting 1 to 2 minutes.
- It isolates one muscle, so it works best after your bigger lifts, with 10 to 15 reps.
Alternatives for the same muscles
No machine, no barbell, or something hurts? These work the same muscles.
PlankAbs
Hanging knee raiseAbs, Hip flexors
Pallof pressAbs, Obliques
Dead bugAbs
CrunchAbs
Cable crunchAbsQuestions
What muscles does the ab crunch machine work?
Ab crunch machine mainly works your abs. It also helps your hip flexors.
Can I do the ab crunch machine at home?
Not easily, it needs this: machines. At home, try instead: plank, hanging knee raise, and dead bug.
How many sets and reps of the ab crunch machine?
To build muscle: 3 to 4 sets of 8 to 12 reps, resting 1 to 2 minutes. It isolates one muscle, so it works best after your bigger lifts, with 10 to 15 reps.
Warm up for 5 to 10 minutes first. Stop if something hurts (sharp pain, not effort), and check with a doctor if you have a health condition. Photos: Free Exercise DB (public domain).
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