Clamshell for BJJ
The clamshell exercise strengthens the gluteus medius by opening the knees apart while lying on your side with feet together. Strong glute medius muscles stabilize the pelvis and prevent the knee from collapsing inward. This exercise is essential for preventing the knee injuries common in guard players.
✓ Step-by-Step Instructions
- 1 Lie on your side with hips stacked and knees bent at 45 degrees.
- 2 Keep your feet together throughout.
- 3 Raise your top knee as high as possible without rotating your pelvis.
- 4 Hold briefly at the top.
- 5 Lower back down with control.
- 6 Complete all reps, then switch sides.
💪 Muscles Worked
Primary Muscles
Secondary Muscles
🥊 BJJ Application
Strengthens the hip stabilizers that prevent knee collapse during guard work and takedown entries. Weak glute medius is a primary contributor to ACL injuries in grapplers.
🔧 Equipment Needed
✗ Common Mistakes
- ⚠ Rolling the hips backward during the opening
- ⚠ Not opening wide enough
- ⚠ Moving too fast
- ⚠ Separating the feet
🔄 Variations
- → Banded clamshell
- → Elevated clamshell
- → Reverse clamshell
- → Clamshell with hip extension
Track Your Clamshell Progress
Log your injury prevention sessions alongside your BJJ training. MatTime gives you a complete picture of your athletic development.
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Frequently Asked Questions
How does the Clamshell help my BJJ game? ▼
Strengthens the hip stabilizers that prevent knee collapse during guard work and takedown entries. Weak glute medius is a primary contributor to ACL injuries in grapplers.
What equipment do I need for the Clamshell? ▼
You will need: none. Make sure all equipment is properly set up before beginning the exercise.
How difficult is the Clamshell? ▼
The Clamshell is rated 1 out of 5 in difficulty. This is a beginner-friendly exercise suitable for athletes at any training level. Focus on proper form before adding intensity.