Single Leg Squat
The Single Leg Squat is a challenging unilateral lower-body exercise that builds strength, balance, and coordination by requiring one leg to perform a squatting motion while the other remains off the ground. It primarily targets the quadriceps and glutes while highlighting and correcting muscle imbalances between the left and right sides.
Iridium scales your performance metrics relative to your current body weight to ensure accurate progressive overload tracking for this unilateral movement. To manage fatigue, the AI counts this volume toward your quadriceps and glute limits while checking your systemic recovery score. If your recent workout history suggests high lower-body fatigue, Iridium may prioritize more stable exercises over this balance-dependent variation.
Form Cues
- Keep your chest lifted and core braced tight throughout the rep
- Shift your weight completely onto the standing leg before descending
- Sit your hips back and down as if reaching for a chair
- Drive firmly through your standing heel to return to the top
- Track your knee in line with your second and third toes
- Don't let your standing knee collapse inward
- Don't lift your standing heel off the ground
- Don't round your upper back or hunch forward
- Don't let your non-working foot touch the floor unless necessary for balance
- Don't rush the descent; control the lowering phase
Common Mistakes
- Knee caving inward (valgus collapse)
- Heel lifting off the floor
- Rounding the upper back
- Descending too quickly
- Insufficient depth
Muscles Worked
This exercise primarily isolates the quadriceps and glutes, forcing them to lift your entire body weight without assistance from the opposite leg. It also heavily recruits the hamstrings and core stabilizers to maintain balance and prevent rotation, making it highly effective for building functional lower-body strength and joint stability.
Primary
Secondary
Get Personalized Coaching for Single Leg Squat
Don't guess your way through weights or workouts. Download Iridium for automatic, AI-powered coaching that adapts to your recovery and goals.



