Clamshell
Primary
Glutes
Secondary
Hip abductors
Equipment
Bodyweight
Difficulty
Beginner
Type
Rotation
NASM-CPT, CSCS certified trainers. Every guide is built from peer-reviewed research and real coaching experience.
Use for glute activation, warm-up, or rehabilitation. The Clamshell — a isolation rotational movement — is one of the most effective ways to train your glutes, with secondary work on your Hip external rotators.
Everything You Need to Know About the Clamshell
The Clamshell is a good for beginners exercise that targets your Glutes (gluteus medius). It's a popular choice for building strength and muscle in these areas. When should you use it? Use for glute activation, warm-up, or rehabilitation. This timing makes the most of your workout and helps you get better results. Who is this for? All levels. Essential for runners and those with hip issues. Whether you're just starting out or working toward a specific goal, this exercise fits into your routine.
Muscles worked: Clamshell
Primary
Secondary
Stabilizers
Clamshell form guide
- 1
Lie on your side with knees bent at 45 degrees.
- 2
Stack your hips and keep feet together.
- 3
Rest your head on your bottom arm.
- 4
Keeping feet together, rotate your top knee upward.
- 5
Open as far as you can without rotating your pelvis.
- 6
Lower with control and repeat.
What are the best tips for the Clamshell?
Keep your hips stacked - don't roll backward.
Move slowly and with control.
Focus on feeling the outer glute work.
What are common Clamshell mistakes to avoid?
Rolling hips backward to lift higher.
A compromised back position during the Clamshell puts your spine under unnecessary shear force. Brace your core and maintain a neutral spine throughout the movement.
Using momentum instead of controlled muscle contraction.
Bouncing or using momentum during the Clamshell takes work away from your Glutes (gluteus medius) and puts your connective tissue at risk. Control the weight through the full range — if you can't, lower the load.
Not controlling the lowering phase.
Rotational exercises like the Clamshell generate force through your midsection. This mistake leaks power and can strain your Glutes (gluteus medius). Move deliberately and own every inch of the rotation.
Is the Clamshell right for you?
All levels. Essential for runners and those with hip issues.
How to Program the Clamshell
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3 sets of 15-20 reps per side. Rest 30s.
What are good alternatives to the Clamshell?
Fire Hydrant
Side-Lying Hip Abduction
Banded Clamshell
Other Variations
- Banded Clamshell
- Elevated Clamshell
- Reverse Clamshell
This Exercise Is in Your Plan
MySetPlan picks the right exercises for your goals — like the Clamshell — and builds them into a monthly program. Every set, every rep, planned out.
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Safety Notes
- Keep movements controlled.
- Stop if you feel hip pain.