Crunch on bench

Instructions

1
Sit on an adjustable ab bench with backrest set to an incline. Position feet securely under the foot bar or rollers. Ensure lower back makes contact with the bench pad for support and alignment.
2
Place hands behind head with fingers interlaced, keeping elbows wide and shoulders relaxed. Maintain neutral neck position aligned with spine to avoid neck strain during the movement.
3
Slowly lower torso backward toward the backrest by extending through the abdomen in a controlled manner. Allow the back to recline against the inclined pad while maintaining core engagement throughout the eccentric phase.
4
Explosively curl torso upward by contracting the rectus abdominis, bringing chest toward thighs against gravity. Return to starting position with control, exhaling during the concentric phase to maximize core contraction.
PRIMARY MUSCLESRectus Abdominis
SECONDARY MUSCLESIliopsoas, Rectus Femoris, Obliquus Externus Abdominis
EQUIPMENTBody weight
DIFFICULTYIntermediate

Overview

When programming for Rectus Abdominis growth, the Crunch on bench stands out as a highly efficient Strength choice. Performing this movement with Body weight forces your stabilizer muscles to work in tandem with the primary movers, translating to functional strength and enhanced muscular endurance.

Benefits

  • Utilizes Body weight to create sustained mechanical tension, forcing deep muscle adaptation.
  • Reduces the likelihood of Waist injuries by reinforcing connective tissue strength.
  • Acts as a highly scalable Strength movement, perfect for both beginners and elite athletes.
  • Improves overall Waist stability and proprioception during heavy loads.
  • Allows for a natural movement path that closely mimics functional daily activities.

Common Mistakes

  • Failing to achieve a full range of motion, which drastically limits Rectus Abdominis engagement.
  • Using excessive momentum to swing the Body weight rather than controlling the eccentric phase.
  • Shrugging the shoulders or compensating with secondary muscles rather than isolating the Rectus Abdominis.

Pro Tips

Keep your breathing rhythmic: exhale sharply on the concentric push/pull, and inhale smoothly on the way down.

Exercise Variations

  • Dumbbell Crunch on bench
  • Cable Crunch on bench
  • Banded Crunch on bench

Beginner Tips

If you are new to the Crunch on bench, focus on mastering the movement pattern with zero weight before adding Body weight.

Frequently Asked Questions