Can be practiced by all levels as there are modifications for the posture.
Front leg is bent to 90 degrees if available, front foot presses strongly into the mat, quad and glute strongly engaged. The
front knee is stacked over the ankle or a little behind but not in front of, it tracks toward the middle to little toe and not inward to the big toe.
Back leg is engaged, (can be modified knee to mat), hamstring and glute is strong and lifted, back toes press into the mat
Arms are extended and strong (modified as needed for shoulder issues), fingers are extended. Arms and hands engaged. Shoulders away from ears and shoulder blades down the back.
Core is engaged and lengthened to assist in holding the posture and creating a strong center line as the body lifts tall and stays in the lunge position.