Primary
Glutes
Secondary
Hip abductors
Equipment
Bodyweight
Difficulty
Beginner
Type
Rotation
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The example below shows one possible placement. Your purchased plan is built from your assessment, and Ely checks every exercise before approving it.
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This page is not medical advice or a rehabilitation protocol. Ely's personal review applies to purchased workout plans and does not replace an in-person assessment by a licensed healthcare professional.
Clamshell is a beginner-level general fitness movement that trains Glutes (gluteus medius). Use a controlled, comfortable range and an easy starting effort. This guide does not assess pain or provide an injury-recovery protocol.
When to use it
Use Clamshell only for general fitness when you can perform it comfortably. For pain, injury, surgery, or a medical condition, follow a licensed healthcare professional's instructions instead.
Who it's for
Adults using the movement for general fitness who can perform it without pain. Clinical concerns require guidance from a licensed healthcare professional.
Stack your hips vertically—do not roll backward to lift your knee higher. The range of motion is small and controlled. Focus on feeling the outer glute work rather than lifting as high as possible.
Also targets: hip abductors
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Lie on your side with knees bent at 45 degrees.
Stack your hips and keep feet together.
Rest your head on your bottom arm.
Keeping feet together, rotate your top knee upward.
Open as far as you can without rotating your pelvis.
Lower with control and repeat.
Keep your hips stacked - don't roll backward.
Move slowly and with control.
Focus on feeling the outer glute work.
For general fitness, start Clamshell with 1-2 light, controlled sets and increase only when the movement remains comfortable. This is not rehabilitation dosage; use the frequency and progression given by your licensed healthcare professional for an injury or surgery.
Rolling hips backward to lift higher.
Changing your back position during the Clamshell can alter the movement and make the load harder to control. Brace your midsection and keep the torso position called for by the exercise.
Using momentum instead of controlled muscle contraction.
Bouncing or using momentum during the Clamshell makes the movement harder to control and can shift work away from your Glutes (gluteus medius). Use a load you can move smoothly through the intended range.
Not controlling the lowering phase.
Rotational exercises like the Clamshell generate force through your midsection. This mistake reduces control and can shift work away from your Glutes (gluteus medius). Move deliberately through the intended range.
Adults using the movement for general fitness who can perform it without pain. Clinical concerns require guidance from a licensed healthcare professional.
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.
This is one example of how Clamshell could sit inside a complete workout. Your plan may use different movements after Ely checks your assessment.
Sample workout
MySetPlan guides you set by set, times your rest, records your work, and tells you what to do next from the plan Ely approved.
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Frequently Asked Questions About the Clamshell
The Clamshell primarily targets the Glutes (gluteus medius), making it an effective exercise for glutes development. Secondary muscles worked during the Clamshell include Hip external rotators, providing additional training stimulus. Stabilizer muscles engaged include Core.
Yes, the Clamshell is an excellent choice for beginners due to its straightforward movement pattern and lower technical demands. Adults using the movement for general fitness who can perform it without pain. Clinical concerns require guidance from a licensed healthcare professional. Start with lighter weights to master proper form before progressing.
For the Clamshell, the recommended approach depends on your goals. 3 sets of 15-20 reps per side. Rest 30s. For strength, use 12-15 reps per side. For muscle growth, perform 15-20 reps per side. For endurance, complete 20-30 reps per side.
Yes, the Clamshell can be done at home with no equipment. It requires minimal space and is a great option for home workouts targeting glutes.
Good alternatives to the Clamshell include: Fire Hydrant, Side-Lying Hip Abduction, Banded Clamshell. These exercises target similar muscle groups as the Clamshell and can be used as substitutes based on your equipment availability, gym setup, or training preferences.