Crunch On Bench
Crunch On Bench Exercise Description
The bench crunch is a bodyweight trunk-flexion exercise performed supine on a flat bench. It primarily targets the rectus abdominis, with the external and internal obliques and the transverse abdominis assisting in bracing and controlling the movement. The goal is to curl the ribcage toward the pelvis using controlled spinal flexion, while minimizing hip motion and keeping the neck neutral. Compared with a full sit-up, the crunch uses a smaller range focused on the upper trunk, which helps limit hip flexor contribution. Proper setup and bracing are key: establish a slight posterior pelvic tilt, keep the lumbar region gently in contact with the bench, and move smoothly without pulling on the head or jerking through the reps.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Assisting Muscles: External Obliques, Internal Obliques
- Stabilizing Muscles: Multifidus, Quadratus Lumborum, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front
- Body Symmetry: Other
- Equipment: Bench, Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Flexors
- Joint Involvement: Single-joint
- Muscle Location: Stomach
- Movement Direction: Vertical
- Muscle Position: Anterior
- Gender: Male
How To Do The Crunch On Bench Exercise
‘- Lie supine on a flat bench with your head near one end, knees bent, and feet flat on the bench, hip-width apart.
– Cross your arms over your chest, or place fingertips lightly at your temples with elbows wide (do not pull on your head).
– Posteriorly tilt the pelvis to gently flatten the low back against the bench; brace the abdominal wall and keep ribs “down.”
– Initiate by bringing the sternum toward the pelvis; exhale as you lift the head, neck, and shoulder blades together.
– Keep the chin slightly tucked and eyes angled toward the ceiling; avoid jutting the head forward.
– Stop when the bottom of your shoulder blades just clear the bench; hold the brace.
– Inhale and lower under control, returning one vertebra at a time until the shoulders touch.
– Avoid yanking the neck, flaring the ribs, lifting the feet, arching the low back, or bouncing off the bench.
Crunch On Bench Tips
‘- Lie with knees bent and feet flat on the bench, set about hip-width apart.
– Cross your arms over your chest or lightly place fingertips at your temples, keeping elbows wide.
– Do not pull on your head or neck with your hands.
– Posteriorly tilt your pelvis to gently flatten your low back against the bench before you start.
– Brace your abdominal wall and keep the ribs “down” throughout the movement.
– Initiate each rep by bringing your sternum toward your pelvis, not by swinging your body.
– Exhale as you lift your head, neck, and shoulder blades together.
– Keep your chin slightly tucked and eyes angled toward the ceiling to avoid jutting the head forward.
– Lift only until the bottom of your shoulder blades just clear the bench, then hold the brace.
– Inhale as you lower under control, returning one vertebra at a time until your shoulders touch the bench, without bouncing.
Crunch On Bench Beginner Introduction
The bench crunch is a bodyweight abs exercise performed lying on a flat bench, using a short curling motion of the upper body rather than a full sit-up. It centers on the front of the midsection, with help from the deeper core and side abs to create tension and control. Because the movement stays in a smaller range, the emphasis shifts toward the upper trunk and away from the hip flexors, giving the abdominal muscles more of the workload.
During the exercise, the chest gently rolls toward the hips so the spine bends through the middle rather than hinging at the hips. The lower back rests lightly against the bench while the head, neck, and shoulders rise together as one unit, reducing strain on the neck. The legs remain still on the bench so the motion comes mainly from the torso. Smooth, deliberate lifting and lowering, along with steady core tension, defines this variation and makes it useful for people who want a more controlled alternative to traditional floor sit-ups.