Exercise guide
Clamshell Sit Against Wall
- Beginner
- Isolation
- Rep-based
- Hips
- Lower legs
This exercise combines hip abduction with a side-lying bridge to target the gluteus medius and stabilize the quadriceps. Using a wall ensures perfect spinal alignment and prevents the hips from rotating backward, maximizing muscle isolation.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Lie on your side with your back, hips, and heels pressed firmly against a wall.
- Bend your knees to a 90-degree angle and stack your legs perfectly.
- Prop yourself up on your bottom forearm with the elbow directly under the shoulder, or lie flat with your head on your arm for a beginner modification.
- Ensure your heels remain in contact with the wall throughout the setup.
How to do it
- Exhale as you lift your top knee toward the ceiling while keeping your heels glued together and pressed against the wall.
- Simultaneously press your bottom knee into the floor to lift your hips slightly, engaging the bottom-side glute and quad.
- Inhale as you slowly lower your knee and hips back to the starting 'sit' position in a controlled 3-second eccentric phase.
- Complete all reps on one side before switching to the other.
Form checklist
- Keep your heels and tailbone in constant contact with the wall.
- Do not allow your top hip to roll backward as the knee opens.
- Maintain a straight line from your head to your tailbone.
- Ensure the movement is slow and controlled, avoiding momentum.
Pro tips
- Focus on driving the bottom knee into the ground; this 'grounding' action increases the activation of the stabilizing quadriceps.
- Imagine there is a string pulling your top knee toward the ceiling to maximize the range of motion in the hip socket.
Make it harder
- Place a small resistance band just above your knees to increase the load on the gluteus medius.
- Add a 5-second isometric hold at the peak of the contraction for every rep.
Frequently asked
- What muscles does the clamshell sit against wall work?
- The clamshell sit against wall primarily targets the glutes, and also works the adductors and hip flexors as secondary muscles.
- What equipment do you need for the clamshell sit against wall?
- The clamshell sit against wall requires no equipment — just your body weight.
- Is the clamshell sit against wall good for beginners?
- Yes. The clamshell sit against wall is a beginner-friendly movement and a strong foundation to build on.
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