Lying Clamshell (RB) – How to Do It & Muscles Worked

 

 

Lying Clamshell (RB) is a staple for isolating the side glutes (gluteus medius/minimus), improving hip stability, and shaping the upper-outer glute. It’s beginner-friendly, joint-safe, and perfect for home programs.

Step-by-Step Setup & Execution

  • Band placement: Mini band just above the knees (start here). Move lower for more challenge—only if you can keep hips stacked.
  • Start position: Lie on your side, shoulders & hips stacked, knees bent ~90°, feet in line with your spine. Head supported, bottom hand under the head or on the floor.
  • Brace: Ribs down, light core tension. Imagine your top hip pointing straight forward—no rolling back.
  • Open: Keep feet touching and open the top knee against the band. Stop where the pelvis would start to rotate.
  • Squeeze & control: Pause 1–2s feeling the side-glute burn, then return slowly. No bouncing the band.
  • Prescription: 2–4 sets × 12–20 reps/side. Tempo: 2s up, 1–2s hold, 2–3s down.

Coaching Cues (Fix Form Fast)

  • Think “knees open, hips still”—not “roll the hip back.”
  • Keep feet lightly together to bias the lateral glutes instead of the low back.
  • Stack ribs over pelvis; don’t flare the ribcage as you open.
  • Move slow. If you don’t feel side-glute burn, reduce range and stop any hip roll.

Muscles Worked

  • Gluteus Medius & Minimus: Primary drivers (abduction/external rotation).
  • Deep Hip Rotators: Assist and stabilize.
  • Core Stabilizers: Keep the pelvis and spine neutral.

Progressions & Programming

  • Make it harder: Thicker band, longer top pause, 1.5 reps, or elevate feet slightly on a pad.
  • When to use: Warm-up/activation before squats, deadlifts, or runs; accessory work on lower-body/glute days; finisher for a concentrated lateral-glute burn.
  • Pair with: Hip thrust, lateral band walks, and single-leg RDLs for a complete glute routine.
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