Position bar to match your height. Grab bar with hands shoulder-width apart. Move one foot forward about 12 inches in front of the bar. Extend the other leg out in front of you, holding it off the ground. Look forward at all times and with good posture, lower yourself by flexing the knee and hip, going down as far as flexible. Pause at the bottom then drive through heel back up. Repeat this movement for all reps then switch legs and repeat.