Machine Crunch

Muscles Worked

How to Perform

1. 1

   Adjust the seat, pads, and handles so the machine aligns properly with your joints. Proper setup prevents injury and ensures the target muscle does the work.

2. 2

   Brace your body against the pads to isolate the target muscle. Grip the handles or position yourself as indicated.

3. 3

   Move through the full range of motion with deliberate control. Focus on the squeeze at peak contraction.

4. 4

   Return to the starting position slowly — the eccentric phase is where significant muscle damage and growth occurs.

Common Mistakes

• Using too much weight and compensating with other muscle groups. Isolation demands strict form over ego loads.

• Rushing through reps without controlling the eccentric. The lowering phase should be 2-3 seconds minimum.

• Cutting the range of motion short. Full range builds more muscle and healthier joints.

Pro Tips

• Exhale forcefully as you contract your abs. This activates the transverse abdominis and makes the crunch or leg raise significantly more effective.

• Think about shortening the distance between your sternum and your pelvis, not about moving your head or legs.

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