Stand facing a sturdy box, bench, or step.

Place one foot (e.g., right) firmly onto the center of the step.

Push through the heel of the front foot to lift your body up, bringing the other foot (left) onto the step.

Keep your core engaged and torso upright.

Step back down with the trailing foot (left), followed by the lead foot (right).

Repeat, leading with the same foot for desired reps, then switch lead foot.