1 - Step into the sissy squat machine and secure your feet under the foot pads with your calves supported against the rear pad.
2 - Stand tall with your torso upright, brace your core, and keep your hips extended so your body forms a straight line from shoulders to knees.
3 - Begin the movement by bending your knees and allowing them to travel forward while leaning your torso slightly back in a controlled manner.
4 - Lower until you feel a strong stretch and contraction through the quadriceps, keeping your chest up and avoiding excessive arching in the lower back.
5 - Drive through the balls of your feet and extend your knees to return to the starting position.
6 - Squeeze your quadriceps at the top without locking out aggressively, then repeat for the desired number of repetitions.