Lying Tuck Crunch
Lying Tuck Crunch Exercise Description
The Lying Tuck Crunch (often called a “double crunch”) is a floor-based abdominal exercise that combines a traditional crunch with a knee tuck. It primarily targets the rectus abdominis via controlled spinal flexion and posterior pelvic tilt, bringing the rib cage and pelvis toward each other. The external and internal obliques assist in trunk flexion and stabilization, while the hip flexors help move the thighs during the knee tuck. Compared with a standard crunch, coupling the curl with a pelvic tilt can reduce excessive lumbar extension and keep emphasis on the abdominal wall. Use a short, smooth range and avoid momentum or pulling on the neck to keep the stress on the trunk rather than the cervical spine or hip flexors. Exhale on the lift to reinforce abdominal bracing, and focus on precise control over height.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Assisting Muscles: External Obliques, Iliacus, Internal Obliques, Psoas Major
- Stabilizing Muscles: Multifidus, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front
- Body Symmetry: Bilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Flexors
- Joint Involvement: Multi-joint
- Muscle Location: Stomach
- Movement Direction: Other
- Muscle Position: Anterior
- Gender: Female
How To Do The Lying Tuck Crunch Exercise
‘- Lie supine on a mat; eyes to the ceiling; neck neutral; shoulder blades and pelvis grounded.
– Place fingertips lightly at the sides of your head (or arms by your sides); elbows stay wide.
– Bring hips and knees to about 90 degrees; shins parallel to the floor.
– Lightly posteriorly tilt the pelvis to “imprint” the low back against the mat.
– Inhale to prepare; brace the abdominal wall gently.
– Exhale as you simultaneously curl the upper trunk (scapulae leave the floor) and draw knees toward the chest.
– Think “sternum toward pubic bone”; keep the chin tucked slightly without yanking the head.
– Pause briefly at the top; ribs stay down; pelvis remains tucked.
– Lower slowly: uncurl the spine and return knees over hips, maintaining light low‑back contact.
– Avoid swinging the legs, arching the low back, or holding your breath; stop if form changes.
Lying Tuck Crunch Tips
‘- Keep your eyes on the ceiling and neck neutral as you lie supine, with shoulder blades and pelvis grounded.
– Place fingertips lightly at the sides of your head and keep elbows wide so you don’t pull on your neck.
– Set hips and knees at about 90 degrees with shins parallel to the floor before you start moving.
– Lightly posteriorly tilt the pelvis to “imprint” your low back into the mat and maintain that contact throughout.
– Inhale to prepare and gently brace the abdominal wall before each rep.
– Exhale as you simultaneously curl your upper trunk (scapulae leave the floor) and draw your knees toward your chest.
– Think “sternum toward pubic bone” to coordinate the rib cage and pelvis moving toward each other.
– Keep the chin slightly tucked and avoid yanking the head as you curl up.
– Pause briefly at the top with ribs down and pelvis still tucked to keep tension on the abdominals.
– Lower slowly by uncurling the spine and returning knees over hips, avoiding leg swinging, low-back arching, or breath-holding; stop if your form changes.
Lying Tuck Crunch Beginner Introduction
The Lying Tuck Crunch is a mat-based core move that blends an upper‑body curl with a leg draw-in, creating a compact “double” action through the mid‑section. As the chest and thighs travel closer together, the abs take on most of the effort, with the side abs and hip flexors contributing to the motion. Because the spine rounds gently and the hips subtly roll, the lower back experiences less arching than in many basic crunch variations, helping attention stay on the abdominal wall.
The movement takes place in a relatively small, smooth range on the floor, emphasizing precision over height or speed. The head and shoulders lift only enough for the shoulder blades to clear the mat, while the knees move in toward the torso without swinging. This pattern encourages a sense of the ribcage and pelvis drawing toward one another rather than the neck or legs taking over. Calm, deliberate breathing throughout the repetition supports bracing through the center and a stable trunk as the body curls in and then lengthens back to the starting position.