Machine Crunch

Level
intermediate
Category
strength
Primary Muscles

A core flexion exercise performed on a machine that isolates the abdominal muscles through controlled forward folding.

Instructions

  1. Select an appropriate weight and sit down on the machine, placing your feet under the foot pads.
  2. Grip the handles at chest level with both hands, keeping your arms bent at approximately 90 degrees.
  3. Sit upright with a neutral spine, maintaining proper posture against the backrest.
  4. Contract your abdominal muscles and pull the handles downward toward your hips while bringing your torso forward.
  5. Focus on flexing at the waist and allow your elbows to move toward your hips.
  6. Pause briefly at the bottom position, squeezing your abs.
  7. Slowly return to the starting position and repeat for the prescribed number of repetitions.

Tips

  • Use light to moderate weight and focus on controlled movement rather than heavy loading.
  • Keep your head and neck neutral; avoid pulling with your neck or arms.
  • Concentrate on feeling your abdominals contract with each repetition.
  • Move through the full range of motion from start to finish.
  • Avoid jerky movements; maintain a smooth, controlled tempo throughout.
  • Keep your feet firmly planted for stability during the exercise.

Recommended starting values

Sensible novice starting points for each goal, for a lifter aged 25–40. Scale down for smaller frames or older lifters. Treat the first set of any session as a discovery set.

Goal Sets Reps Weight
Male Female
Gain strength 3 15 reps 17 kg 13 kg
Build muscle 3 18 reps 15 kg 12 kg
Build endurance 3 25 reps 11 kg 9 kg