Adjust the seat so that your legs are bent at a 90 degree angle. If the seat can recline position it so that you do not feel a strain in your lower back. Position your feet shoulder width apart on the platform.
As you press the weight with your legs be sure that you do not lock your knees at the top of the rep. Now lower your body down as far as you can without putting any stress on your lower back It is also important that you do not let your
knees buckle together. Keep them aligned with your feet. On some machines you will press the platform away from your body, however on some models the platform remains stationary and your seat will slide backwards. In either
case your form remains the same.
Tips: It is important to use a full range of motion on this exercise instead of piling on the weight and only performing half reps. Your legs should be bent at 90 degree angle at the bottom portion of this exercise although your knees will be
pushed toward your chest a bit. Most of these machines have handles for you to place your hands on. Be sure that you do not squeeze the handles too tight causing a surge in blood pressure.