1. Using a small stable exercise box, or step, or bench no higher than knee height, take a step with one foot onto the top of the bench.
2. Make sure the entire foot steps up on the box, and lands straight and gently on the knee. Step the opposite foot up to meet the first, standing tall to pause, engage the legs, glutes, and core, and then step opposite foot down to the ground, switching the lead foot each time.
3. Make sure to continue to press into the heel of the top foot throughout the entire up and down phase of the bench step. Keep the shoulders in line with the hips, and stay light on the feet. Keep a controlled pace.