Set up a box behind a Smith Machine. Set-up under the racked bar, positioning the bar on your shoulders and placing hands out to each side with overhand grip. Place one foot on the box and the other in front on the floor.
Roll the bar back to un-rack and bend into your front leg until your back knee gets close to the floor. Straighten until standing again. Change foot.
Note: If your front leg knee is going over your toes when you lunge down, re-position the front foot further in front of you.
