Side Plank Knee Tuck
Side Plank Knee Tuck Exercise Description
The Side Plank Knee Tuck is a bodyweight core exercise that combines a stable side plank with controlled hip flexion from the top leg. It targets the lateral core—primarily the external and internal obliques and quadratus lumborum—while the transversus abdominis contributes to trunk bracing. The bottom hip’s gluteus medius/minimus help keep the pelvis level, and the supporting shoulder relies on the serratus anterior, rotator cuff, and lateral deltoid for scapular and shoulder stability. The movement challenges you to resist lateral flexion and rotation as the top knee tucks toward the torso, reinforcing neutral spine control under dynamic limb motion. It’s a precise, slow exercise: hips stay lifted, shoulders and hips remain stacked, and the trunk stays quiet while only the top leg moves.
- Muscle Groups: Abs, Core, Obliques, Waist
- Target Muscles: External Obliques, Internal Obliques, Quadratus Lumborum
- Assisting Muscles: Transversus Abdominis
- Stabilizing Muscles: Deltoid - Lateral, Gluteus Medius, Gluteus Minimus, Infraspinatus, Serratus Anterior, Subscapularis, Supraspinatus, Teres Minor
- Body Area: Upper Body
- Body Parts: Back, Core, Lower Back, Torso
- Body Surface: Side
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Spine Stabilizers, Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Single-joint
- Muscle Location: Deep Side Abs, Side Abs, Side Lower Back
- Movement Direction: Horizontal
- Muscle Position: Lateral
- Gender: Male
How To Do The Side Plank Knee Tuck Exercise
‘- Lie on your side with legs extended; stack or lightly stagger your feet.
– Place your forearm on the floor with the elbow directly under the shoulder; forearm perpendicular to your torso.
– “Pack” the shoulder (draw shoulder blade down and slightly back) and press the forearm into the floor.
– Brace the abdominal wall; align head, ribcage, pelvis, and legs in a straight line; stack hips and shoulders.
– Lift hips so your body forms a straight line from ear to ankle, keeping the neck neutral.
– Without rotating or dropping the hips, draw the top knee toward the chest using hip flexion; keep pelvis level.
– Pause briefly, then extend the top leg back to the starting stacked position under control.
– Breathe steadily—exhale as you tuck, inhale as you return.
– Avoid shrugging the supporting shoulder, flaring the ribcage, or letting the hips pike or sag.
– Lower with control to finish, then switch sides.
Side Plank Knee Tuck Tips
‘- Stack or lightly stagger your feet before lifting to create a stable base.
– Position your elbow directly under your shoulder with the forearm perpendicular to your torso.
– Pack the supporting shoulder by drawing the shoulder blade down and slightly back as you press the forearm into the floor.
– Brace your abdominal wall and align head, ribcage, pelvis, and legs in one straight line with hips and shoulders stacked before moving.
– Keep hips lifted so your body forms a straight line from ear to ankle, maintaining a neutral neck.
– As you tuck the top knee, move from the hip joint only, keeping the pelvis level and avoiding hip rotation or drop.
– Keep the trunk “quiet” so only the top leg moves, then pause briefly at the end of the knee tuck.
– Extend the top leg back to the starting stacked position under control rather than letting it swing.
– Breathe steadily, exhaling as you tuck the knee and inhaling as you return the leg.
– Avoid shrugging the supporting shoulder, flaring the ribcage, or letting the hips pike or sag during the set.
Side Plank Knee Tuck Beginner Introduction
The Side Plank Knee Tuck blends a sideways support position with a controlled knee lift, creating a demanding bodyweight challenge for the entire midsection. In this move, the body balances on one forearm and the side of the lower leg while the top leg draws in toward the torso. The position places a strong emphasis on the side abs, deep abs, and the muscles along the side of the lower back, all working together to hold the trunk steady while the leg shifts.
Because the body is propped on one hip and shoulder, the glutes of the lower side, the rib cage muscle, the rotator cuff, and the side shoulder play a major role in helping the pelvis and upper body stay aligned. The movement trains the torso to stay long and stable instead of bending or twisting as the knee tucks in and extends out again. This creates a slow, precision-based core drill that challenges balance, coordination, and control, with smooth breathing supporting the effort from start to finish.