Arm Tuck Side Bend
Arm Tuck Side Bend Exercise Description
The Arm Tuck Side Bend is a bodyweight lateral flexion drill that trains the trunk in the frontal plane. With the arms tucked across the chest, lever length is reduced so you can focus on clean ribcage‑over‑pelvis alignment and controlled motion. Primary movers are the external and internal obliques and the quadratus lumborum; the erector spinae and deep core musculature stabilize the spine as you move. The goal is to bend through the torso without rotating, flexing forward, or hiking the hip, maintaining a neutral head and neck throughout. Use a comfortable, moderate range that you can control while keeping the pelvis level and the shoulders relaxed.
- Muscle Groups: Abs, Core, Obliques, Waist
- Target Muscles: External Obliques, Internal Obliques, Quadratus Lumborum
- Assisting Muscles: Rectus Abdominis
- Stabilizing Muscles: Iliocostalis, Longissimus, Multifidus, Spinalis, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Back, Core, Lower Back, Torso
- Body Surface: Side
- Body Symmetry: Other
- 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: Lateral
- Muscle Position: Lateral
- Gender: Female
How To Do The Arm Tuck Side Bend Exercise
‘- Stand tall with feet about hip‑width, knees soft, and weight balanced mid‑foot.
– “Tuck” the arms by crossing forearms over the chest; keep shoulders down and relaxed.
– Stack ribs over pelvis; lengthen through the crown of the head; set a light abdominal brace.
– Inhale to prepare without flaring the ribcage.
– Slide the ribcage toward the left hip to laterally flex left; keep pelvis level (no hip hike).
– Stay between “two panes of glass”: avoid rotation or forward/backward flexion.
– Move only as far as you can maintain neutral head and steady pelvis.
– Exhale and use the right side of your trunk to return to center.
– Repeat to the right, matching range and control.
– Avoid shrugging, shifting hips sideways, arching the low back, or holding your breath.
Arm Tuck Side Bend Tips
‘- Stand tall with feet about hip-width, knees soft, and weight balanced through the mid-foot.
– Cross your forearms over your chest and keep your shoulders down and relaxed.
– Maintain ribs stacked directly over the pelvis as you move.
– Gently lengthen through the crown of your head and keep a light abdominal brace.
– Inhale to prepare without letting the ribcage flare upward.
– Slide the ribcage toward the hip to side-bend, keeping the pelvis level and avoiding any hip hike.
– Imagine moving between two panes of glass to avoid rotating or flexing forward/backward.
– Only bend as far as you can keep a neutral head position and a steady pelvis.
– Exhale and focus on using the opposite side of your trunk to return to center.
– Avoid shrugging, shifting the hips sideways, arching the low back, or holding your breath.
Arm Tuck Side Bend Beginner Introduction
The Arm Tuck Side Bend is a standing, bodyweight exercise that targets the side abs, core, and lower back through a smooth side‑bending action. With the forearms folded across the chest, the arms stay close to the body, which shortens the lever and places more attention on how the ribcage moves over the hips. This creates a controlled challenge for the muscles along the waist and the supporting muscles around the spine.
The movement centers on tipping the upper body to one side and then returning to an upright position, without twisting, leaning forward, or lifting the hip. The neck and head stay in line with the rest of the spine so the entire trunk moves as one connected unit. The side abs and side lower back on one side of the body guide the bend, while the opposite side works strongly to bring the torso back to center. Overall, the drill highlights precise alignment, gentle range, and steady, deliberate motion rather than big, dramatic bending.