1
Sit upright on a bench with back support, knees bent at 90 degrees, feet flat on floor or hanging slightly. Grip the bench sides for stability.
2
Maintain upright posture with shoulders back and core engaged. Position feet shoulder-width apart. Ensure knees stay aligned with hips.
3
Slowly lower the leg by bending the knee, allowing the foot to move downward in a controlled motion while keeping the upper leg stationary on the bench. Lower until knee reaches approximately 120-135 degrees of flexion.
4
Drive the foot upward by extending the knee, straightening the leg until it reaches full extension or slightly before lockout. Contract the quadriceps at the top and return to starting position with control.