Lying Tuck-Up
Lying Tuck-Up Exercise Description
The lying tuck-up is a bodyweight trunk-flexion exercise that combines spinal flexion with hip flexion to train the anterior core. You’ll start supine and “tuck” by curling the torso while drawing the knees toward the chest, meeting in the middle with control. Primary emphasis is on the rectus abdominis, with the external/internal obliques and transverse abdominis contributing to trunk stability. The hip flexors (iliopsoas and rectus femoris) assist as the thighs move toward the torso. Key technique focuses include maintaining a gentle posterior pelvic tilt, keeping the ribs “down,” and moving smoothly without momentum. Proper execution builds coordination between the pelvis and ribcage, reinforces bracing, and teaches you to control the lumbar spine through the full range.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis
- Assisting Muscles: Iliacus, Psoas Major, Rectus Femoris
- Stabilizing Muscles: External Obliques, Internal Obliques, 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: Male
How To Do The Lying Tuck-Up Exercise
‘- Lie on your back with legs long and together; arms reach alongside your body with hands just off the floor.
– Set your trunk: light abdominal brace, ribs down, and a gentle posterior pelvic tilt so the low back contacts the floor.
– Keep your neck neutral with a slight chin tuck; gaze toward the knees (not the ceiling).
– Initiate by exhaling and curling your upper back off the floor while simultaneously flexing the hips to bring knees toward your chest.
– Sweep your hands forward toward shins as the thighs and torso approach each other; balance briefly on your sacrum.
– Keep knees and feet together; avoid pulling on the neck or shrugging the shoulders.
– At the top, maintain ribcage-to-pelvis connection (no flaring ribs or arching low back).
– Reverse under control: inhale as you slowly extend the legs and lower the torso to the start without letting the low back abruptly arch.
– Stop the descent at the first point you can no longer keep pelvic control; lightly tap heels if needed, then reset.
– Move smoothly without throwing the arms or swinging the legs; prioritize a controlled curl and return over height.
– Discontinue the rep if you feel low-back strain; reduce range and re-establish posterior pelvic tilt before continuing.
Lying Tuck-Up Tips
‘- Start with legs long and together, arms reaching alongside your body with hands just off the floor.
– Before moving, lightly brace the abs, draw the ribs down, and set a gentle posterior pelvic tilt so your low back contacts the floor.
– Keep your neck neutral with a small chin tuck and look toward your knees, not the ceiling.
– Initiate each rep by exhaling as you curl your upper back off the floor and flex the hips to bring your knees toward your chest.
– Sweep your hands forward toward your shins as your thighs and torso come together, briefly balancing on your sacrum.
– Keep your knees and feet together throughout and avoid pulling on your neck or shrugging your shoulders.
– At the top, maintain the ribcage-to-pelvis connection, avoiding flared ribs or an arched low back.
– Inhale as you lower under control, slowly extending the legs and lowering the torso without letting your low back abruptly arch.
– Stop the descent at the first point where you can’t maintain pelvic control; lightly tap your heels if needed, then reset.
– Move smoothly without throwing the arms or swinging the legs, prioritizing a controlled curl and return over how high you get.
Lying Tuck-Up Beginner Introduction
The lying tuck-up is a bodyweight core move that blends a curl of the upper body with a fold at the hips, bringing the chest and knees toward each other. It places the spotlight on the abs, with support from the side abs and deep abs to steady the middle of the body. The muscles at the front of the hips and thighs help lift the legs as they travel toward the torso, creating a coordinated, full-front effort.
This exercise is all about controlled, connected motion rather than speed or swinging. The setup positions the lower back gently into the floor with the hips slightly rolled, the ribcage softened toward the pelvis, and the neck in a relaxed, aligned posture. As the body folds and unfolds, attention centers on keeping the midsection braced, the spine supported, and the movement smooth from start to finish. Over time, this pattern can sharpen awareness of how the hips and ribcage work together and encourage better management of the lower back throughout the entire arc of the rep.