Weighted Crunch
Weighted Crunch Exercise Description
The weighted crunch is a controlled spinal-flexion exercise that primarily targets the rectus abdominis, with assistance from the external obliques, while the transverse abdominis contributes to trunk bracing. Adding load to the traditional crunch increases resistance through a short, precise range of motion focused on lifting the shoulder blades while keeping the low back anchored. The goal is segmental flexion of the thoracic spine—bringing the rib cage toward the pelvis—without pulling on the neck or driving the movement from the hips. Proper setup emphasizes a gentle posterior pelvic tilt to reduce hip flexor involvement and keep tension on the abdominal wall. Expect a small arc of motion, steady breathing, and smooth control in both directions to maintain constant abdominal engagement. This variation is well-suited for progressing core strength when bodyweight crunches become too easy, provided alignment and tempo remain disciplined.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Assisting Muscles: External Obliques
- Stabilizing Muscles: Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front
- Body Symmetry: Other
- Equipment: Weighted
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Flexors
- Joint Involvement: Single-joint
- Muscle Location: Stomach
- Movement Direction: Other
- Muscle Position: Anterior
- Gender: Male
How To Do The Weighted Crunch Exercise
‘- Lie supine with knees bent, feet flat and hip-width apart.
– Gently posteriorly tilt the pelvis to keep the low back in contact with the floor; ribs “down.”
– Hold a plate or dumbbell against the mid-chest with both hands; keep it close to your torso.
– Set a neutral neck; keep a fist-sized space under the chin and eyes toward the ceiling.
– Inhale to prepare and brace the abdominal wall (as if anticipating a cough).
– Initiate by drawing the rib cage toward the pelvis; curl until shoulder blades lift 1–3 inches.
– Keep the low back anchored; avoid thrusting the hips or pulling with the arms.
– Exhale through the top; pause briefly while maintaining abdominal tension.
– Lower under control, uncurling one vertebra at a time without losing the pelvic tilt.
– Repeat with the same small arc; keep the weight steady and elbows relaxed.
– Avoid: yanking the head, flaring the ribs, swinging the weight, or letting the feet pop up.
Weighted Crunch Tips
‘- Before you move, gently posteriorly tilt your pelvis so your low back stays in contact with the floor and ribs stay “down.”
– Keep the weight pressed against your mid-chest and close to your torso instead of letting it drift away.
– Maintain a neutral neck with a fist-sized gap under your chin and your eyes directed toward the ceiling.
– Brace your abdominal wall on the inhale as if anticipating a cough before starting each rep.
– Initiate the crunch by drawing your rib cage toward your pelvis rather than leading with your head or hips.
– Lift only until your shoulder blades come 1–3 inches off the floor to keep the motion in a small, controlled arc.
– Keep your low back anchored throughout and avoid thrusting the hips or pulling with the arms.
– Exhale at the top of the crunch and pause briefly while maintaining abdominal tension.
– Lower under control, uncurling one vertebra at a time without losing your pelvic tilt.
– Avoid yanking your head, flaring your ribs, swinging the weight, or letting your feet pop up as you move.
Weighted Crunch Beginner Introduction
The weighted crunch is a slow, controlled core exercise that adds resistance to a classic ab curl. With a weight resting against the chest, the movement mainly challenges the abs, with support from the side abs and deep abs that steady the midsection. The action centers on a gentle curl of the upper spine, where the ribs glide a short distance toward the hips and the upper back lightly leaves the floor, while the lower back stays grounded for stability.
The motion is intentionally small and precise, emphasizing continuous tension rather than big, sweeping reps. A slight roll of the hips backward encourages the work to stay in the abdominal wall rather than shifting into the front of the hips. The neck and arms remain relatively quiet so the core drives the movement instead of momentum. Steady, deliberate breathing pairs with the curl and return, creating a smooth rhythm that helps maintain control. This version suits lifters who already handle basic crunches with ease and want a more demanding yet highly controlled ab exercise.