Negative Crunch
Negative Crunch Exercise Description
The Negative Crunch is a floor-based abdominal exercise that emphasizes the eccentric (lowering) phase of a standard crunch. It primarily targets the rectus abdominis, with assistance from the obliques to stabilize the trunk. The movement pattern is controlled spinal flexion of the upper torso while the pelvis stays steady and the lower back remains neutral to slightly posteriorly tilted. By slowing the descent, you increase time under tension and reinforce precise trunk control without relying on momentum. This drill is bodyweight only and suitable for beginners through advanced lifters when performed with careful alignment and steady breathing.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Assisting Muscles: External Obliques
- Stabilizing Muscles: Internal Obliques, Multifidus, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front
- Body Symmetry: Other
- Equipment: 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 Negative Crunch Exercise
‘- Lie on your back with knees bent and feet flat, hip-width apart. Lightly posteriorly tilt the pelvis so the low back gently contacts the floor.
– Place hands across your chest or lightly support the head with fingertips near the ears; keep elbows wide and avoid pulling on the neck.
– Inhale to prepare. Exhale as you curl the ribcage toward the pelvis, lifting the shoulder blades just off the floor while keeping the gaze toward the ceiling.
– Briefly pause at the top without jutting the chin; maintain a neutral neck.
– Lower your torso very slowly, segment by segment, keeping the ribcage down and pelvis steady until the shoulder blades return to the mat.
– Breathe continuously and keep the abdomen braced; avoid using hip flexors or swinging the legs.
– Stop the set if you cannot control the slow descent or feel your neck taking over the work.
Negative Crunch Tips
‘- Lightly posteriorly tilt your pelvis so your low back gently contacts the floor before you start.
– Keep your knees bent and feet flat, hip-width apart, to create a stable base.
– Cross your arms over your chest or use just your fingertips near your ears, keeping elbows wide so you don’t pull on your neck.
– Exhale as you curl your ribcage toward your pelvis, lifting only the shoulder blades just off the floor.
– Keep your gaze toward the ceiling and avoid jutting your chin to maintain a neutral neck.
– Briefly pause at the top while keeping the neck neutral and the ribcage drawn toward the pelvis.
– Lower your torso very slowly, segment by segment, keeping the ribcage down and pelvis steady.
– Keep your abdomen braced throughout and avoid using your hip flexors or swinging your legs.
– Breathe continuously during the set rather than holding your breath.
– Stop the set if you can’t control the slow descent or feel your neck starting to take over the work.
Negative Crunch Beginner Introduction
The Negative Crunch is a floor-based core move that highlights the slow, downward part of a traditional crunch. It centers on the abs, with the side abs and surrounding core muscles helping to steady the torso. During the exercise, the upper body gently curls toward the hips, then returns to the floor in an extra-slow, controlled motion while the hips and lower back stay settled against the ground. This steady, deliberate return places special emphasis on control rather than speed or momentum.
This ab exercise uses only body resistance on the floor, so it fits well into home or gym routines for a wide range of fitness levels. Hand placement can rest over the chest or lightly support the head, while the neck and gaze stay relaxed and aligned with the ceiling. The movement pattern encourages smooth breathing and a firmly engaged midsection throughout the rise and especially the gradual descent, helping build awareness of how the trunk moves as a single, stable unit.