This challenging exercise works on glute strength in multiple directions, one legged balance, and body awareness at the same time. This is a fairly advanced exercise, and must be done with proper form to achieve the desired results. When performing this exercise, there should be very little knee bend, and you should feel it primarily in the upper outer portion of your glutes (buttocks muscles). The further back you reach with your leg, the more challenging the exercise will be. It’s normal to have some burn in other muscles of the leg. However, you should feel it primarily in the glutes. Enjoy!