Leg Extensions target the quadriceps (front thigh muscles) while also engaging the knees for joint stability. Sit on a leg extension machine with your shins under the padded lever. Extend your legs fully, pause at the top to contract your quads, then slowly lower back to the starting position. This isolation exercise strengthens the quads, supports knee health, and improves performance in squats, lunges, and other leg movements. Gymcheq emphasizes controlled motion and proper alignment to maximize results and reduce injury risk.