Weighted Crunch
Weighted Crunch Exercise Description
The Weighted Crunch is a floor-based trunk flexion exercise that strengthens the rectus abdominis by adding external resistance. The movement occurs primarily through controlled thoracic spinal flexion while the pelvis stays in a slight posterior tilt, keeping the lumbar spine in contact with the floor. Holding a plate or dumbbell against the chest increases torque at the trunk without encouraging the neck or hips to take over. The internal and external obliques assist as stabilizers, helping resist rotation and maintain rib-to-pelvis control. Expect a small, precise range of motion focused on bringing the rib cage toward the pelvis rather than “sitting up,” with the cervical spine kept neutral to reduce neck strain.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Assisting Muscles: External Obliques
- Stabilizing Muscles: Internal Obliques, 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 on a mat with knees bent and feet flat, hip-width apart.
– Hold a light plate or dumbbell flat against your chest with both hands; keep elbows close.
– Set a slight posterior pelvic tilt so the low back gently contacts the floor.
– Brace the abdominal wall and draw the ribs down without holding your breath.
– Inhale to prepare; exhale as you curl the head, shoulders, and upper back off the floor.
– Think “sternum toward pelvis”; lift only until the shoulder blades clear the mat.
– Keep the weight fixed to your chest—do not reach it forward.
– Maintain a neutral neck: gaze toward the ceiling with a slight chin tuck; avoid pulling on the head.
– Pause briefly at the top with tension through the midline.
– Lower with control, segment by segment, on an inhale until the shoulder blades lightly touch down, keeping lumbar contact throughout.
Weighted Crunch Tips
‘- Keep your knees bent with feet flat on the mat, hip-width apart, throughout the set.
– Maintain a slight posterior pelvic tilt so your low back stays gently in contact with the floor.
– Hold the plate or dumbbell flat against your chest with both hands and elbows close; do not let it drift forward.
– Before lifting, brace the abdominal wall and draw the ribs down without holding your breath.
– Inhale to prepare, then exhale as you curl the head, shoulders, and upper back off the floor.
– Think “sternum toward pelvis” and lift only until your shoulder blades clear the mat, not into a full sit-up.
– Keep your neck neutral with a slight chin tuck and your gaze toward the ceiling; avoid pulling on your head.
– Resist rotation by keeping the rib cage and pelvis aligned as you move.
– Pause briefly at the top and maintain tension through the midline.
– Lower with control on an inhale, segment by segment, until the shoulder blades lightly touch down while keeping lumbar contact throughout.
Weighted Crunch Beginner Introduction
The Weighted Crunch is a mat-based abs exercise that adds a plate or dumbbell across the chest to increase challenge without turning it into a full sit-up. Instead of swinging the body upright, the movement centers on a gentle curl of the upper spine while the lower back rests against the floor, creating a compact, controlled motion that targets the front of the midsection.
During this crunch variation, the main effort comes from the abs, with the side abs helping steady the torso so it does not twist or rock. The weight held close to the chest increases demand on the core rather than the neck or hips, encouraging the ribs to glide toward the front of the pelvis in a short, precise arc. Only the head, shoulders, and upper back leave the mat, with the neck staying relaxed and in line with the body and the eyes looking upward to reduce strain. The return is just as deliberate, as the spine lowers gradually back to the mat, one part at a time, while tension through the center of the body stays engaged.