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Correct form for Ab Crunch Machine
Video in:AparatYouTube

Ab Crunch Machine tutorial

The ab crunch machine is an isolation exercise for the abs that guides the path of the movement. It is a good choice for gym beginners.

How to perform

  1. Choose a light weight and sit on the machine.
  2. Place your feet under the pads and grip the handles with elbows bent about 90 degrees.
  3. Brace your abs and keep your back against the pad.
  4. Curl your torso down and forward, squeezing the abs.
  5. Pause for one second at the bottom.
  6. Return slowly to the start.
Breathing: Exhale as you crunch and inhale as you return.

Key tips

  • Move with your abs, not your arms.
  • Keep the tempo slow.
  • Keep your legs and neck relaxed.

Common mistakes

  • Using too heavy a weight with jerky reps.
  • Pulling the neck with the hands.
  • Letting the weight stack drop back.
Safety: Adjust the seat so your lower back feels comfortable. Stop if you feel back or neck pain.
Abs and corePrimary muscle
MachineEquipment
BeginnerLevel
GymLocation

Suggested sets and reps

Beginner2–3 sets × 12–15 reps
Muscle mass3–4 sets × 10–15 reps
Strength3 sets × 8–10 reps
Fat burning3 sets × 15–20 reps

Pick a weight where the last 1 to 2 reps are hard but done with correct form.

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