The reason I call this a pull-through band good morning is because the band is set up like a pull-through rather than under your feet like a traditional band goodmorning.
Loop the band around the base of the rack. Place the other end of the band around your neck. Perform a good morning by keeping your back flat, knees slightly bent and reaching your hips back. You should feel a stretch in your hamstrings. Return to the top by squeezing with your hamstrings and glutes. The farther away you step from the rack, the harder it will be. Increase the resistance by using a thicker band.