Side Lying Clam
Side Lying Clam Exercise Description
The Side Lying Clam strengthens the lateral hip by training external rotation of the femur while the pelvis stays stable. It primarily targets the gluteus medius (posterior fibers) along with the upper gluteus maximus and the deep hip external rotators (piriformis, obturator internus/externus, gemelli). Because the trunk remains quiet, the exercise also challenges the core to maintain a neutral spine and stacked pelvis. This makes it a clear, low-load way to build hip control used in single‑leg stances, walking, stair climbing, and running. Precision matters more than height: keep the movement small, controlled, and strictly from the hip so the low back and pelvis don’t compensate.
- Muscle Groups: Glutes, Hips
- Target Muscles: Gluteus Medius
- Assisting Muscles: Gemellus Inferior, Gemellus Superior, Gluteus Maximus, Obturator Internus, Piriformis
- Stabilizing Muscles: External Obliques, Internal Obliques, Multifidus, Quadratus Lumborum, Transversus Abdominis
- Body Area: Lower Body
- Body Parts: Hips, Legs, Upper Legs
- Body Surface: Side
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Hip Abductors, Hip Extensors
- Joint Involvement: Single-joint
- Muscle Location: Upper Glutes
- Movement Direction: Rotational
- Muscle Position: Lateral
- Gender: Female
How To Do The Side Lying Clam Exercise
‘- Lie on your side with head supported; stack shoulders, hips, and ankles.
– Bend knees to about 90 degrees and hips to roughly 45 degrees; keep heels in line with your hips and feet stacked.
– Set a neutral spine; lightly brace your abdominal wall and keep ribs down.
– Gently draw the top hip slightly forward so the pelvis stays stacked (no rolling backward).
– Keeping feet touching, open the top knee by rotating the femur outward—move only at the hip.
– Stop when the pelvis wants to tip or the low back starts to twist; range is secondary to control.
– Pause briefly at the top while maintaining steady breathing and a quiet trunk.
– Lower the knee with the same control, keeping the bottom leg relaxed on the floor.
– Throughout, keep the pelvis level, neck long, and gaze forward; imagine your hip “opening” without lifting the thigh toward your chest.
– Repeat for smooth, identical reps, then switch sides while maintaining the same setup.
Side Lying Clam Tips
‘- Stack your shoulders, hips, and ankles in a straight line with your head supported.
– Bend your knees to about 90 degrees and your hips to roughly 45 degrees, keeping heels in line with your hips.
– Lightly brace your abdominal wall and keep your ribs down to maintain a neutral spine.
– Gently draw the top hip slightly forward so the pelvis stays stacked and doesn’t roll backward.
– Keep your feet touching and open the top knee by rotating the femur outward, moving only at the hip.
– Stop the opening as soon as the pelvis wants to tip or the low back starts to twist—prioritize control over range.
– Pause briefly at the top while keeping your breathing steady and your trunk quiet.
– Lower the top knee with the same slow control, letting the bottom leg stay relaxed on the floor.
– Keep your pelvis level, neck long, and gaze forward as you move.
– Aim for smooth, identical reps on each side, recreating the same setup when you switch.
Side Lying Clam Beginner Introduction
The Side Lying Clam is a floor-based hip exercise performed on one side of the body, with the legs bent and the top knee opening and closing like a clamshell. The movement turns the thigh outward while the pelvis stays steady, so the work centers on the side of the hips rather than the lower back. This pattern targets the upper glutes and other small muscles around the hip that help rotate and steady the leg in everyday actions such as standing on one leg, walking, climbing stairs, and running.
Because the upper body stays still throughout, the mid-section also plays a supporting role, helping the spine stay long and aligned while the hips move. The emphasis is on deliberate, precise motion at the hip joint instead of lifting the knee as high as possible. Small, smooth repetitions highlight control and awareness, training the hips and core to share the effort in a balanced, coordinated way.