The Amazing Stickie has amazing hips and legs, natch. Today she is working on them by doing Cossack lunge. She begins standing up straight with her hands clasped in front of her chest. She takes a giant step out to one side, externally rotating both legs and bending the knee toward which she is stepping. (Most people should probably not go past the point where the thigh on the stepping leg is parallel to the floor, at first.) The foot on the the non-bent leg should be pointing up toward the ceiling (i.e., heel on the floor, toes up!).
If you have knee problems, this exercise is one to approach with caution. Don’t do it if it hurts.
Stickie does twenty or thirty for a set.