Exercise guide
Invisible Chair Pose
- Beginner
- Compound
- Rep-based
- Upper arms
The Invisible Chair Pose is a foundational isometric squat that builds lower body endurance and core stability while improving ankle mobility. It forces the quadriceps and glutes to work under constant tension while the core stabilizes the upright torso.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Stand with your feet hip-width apart or with big toes touching and heels slightly separated.
- Distribute your weight evenly across the four corners of your feet.
- Engage your core and roll your shoulders back and down to create a tall, neutral spine.
How to do it
- Inhale and reach your arms overhead with palms facing each other, or bring hands to heart center for balance.
- Exhale as you bend your knees and sit your hips back and down as if sitting into a chair, keeping your weight in your heels.
- Hold the position for the designated time, maintaining a steady, rhythmic breathing pattern.
- Inhale to stand back up to the starting position, driving through the heels to engage the glutes.
Form checklist
- Keep your knees tracking over your toes, preventing them from caving inward.
- Ensure you can see your toes over your knees to protect the joints.
- Tuck your tailbone slightly to avoid excessive arching in the lower back.
- Keep your chest lifted and gaze forward rather than looking at the floor.
Pro tips
- Squeeze your inner thighs toward the midline to create a 'zipping' effect that increases pelvic floor and deep core activation.
- Imagine pulling your shins toward the back of the room to shift more load into the glutes and hamstrings.
Make it harder
- Lift your heels off the floor to balance on the balls of your feet, significantly increasing calf and stabilizer muscle recruitment.
- Lower your hips until your thighs are parallel to the floor while maintaining a vertical chest to maximize time under tension.
Frequently asked
- What muscles does the invisible chair pose work?
- The invisible chair pose primarily targets the calves, glutes, hamstrings, and quadriceps, and also works the serratus anterior as secondary muscles.
- What equipment do you need for the invisible chair pose?
- The invisible chair pose requires no equipment — just your body weight.
- Is the invisible chair pose good for beginners?
- Yes. The invisible chair pose is a beginner-friendly movement and a strong foundation to build on.
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- Barbell Snatch From BlocksAdvanced · adductors, calves, glutes, hamstrings, lats, quadriceps, serratus anterior, and trapezius
- Burpee Jump BoxAdvanced · calves, glutes, hamstrings, and quadriceps