Works legs and butt
Stand with left foot on top of a step or bench and right foot on the floor beside it, hands in fists in front of shoulders. Rise up as you cross right leg behind left, then land with right foot on the floor on the opposite side of the step. Return to starting position. Do 5 reps; switch sides to complete set.
Repeat superset 4 one more time before moving on to the final pair of exercises.