Primary Muscles
Quadriceps (front of thigh), gluteus maximus (glutes)
The highest quad+glute hypertrophy signal in a single-leg lift — the asymmetric king of squats.
3D animation — watch the full movement
Quadriceps (front of thigh), gluteus maximus (glutes)
Hamstrings, gluteus medius (balance), adductors, core (anti-rotation)
Bench or sturdy chair + optional dumbbell pair (5-25 kg / 10-55 lb)
Home / Gym
Intermediate → Advanced
Different jobs. Squat: bilateral, max total load + symmetric strength. BSS: unilateral, fixes asymmetry + hits glute medius + less spinal load. Best programs include both.
With correct form, yes — even used in knee rehab. Knee over foot, controlled descent = safe. Bad form (knee caving in, fast drops) creates risk.
8-12 reps × 3-4 sets at 70-80% 1RM. Endurance: 15-20 × 3. Strength: 5-8 × 4-5 sets with heavy dumbbells.
The most practical leg exercise for home and gym — quads, glutes and hamstrings worked in one move.
The foundation glute isolation lift — reduces lower back pain, improves posture, the gateway to hip thrust.
Sets, reps, rest and weekly progression tailored to your profile.