HOW: Anchor a band at waist height, then place the band around your hips. Begin this movement by performing a reverse lunge with control, then power yourself up into the end position demonstrated in this video. This movement is achieved by raising your heel, extending your hip, and extending the knee simultaneously- hence why it is a triple extension. Slowly lower yourself and repeat.
FEEL: You will feel the muscle of the entire leg that is stabilizing you on the floor work for this exercise- from the calves to the quadriceps to the gluteals.
COMPENSATION: Avoid allowing the knee from collapsing in as you perform this exercise, keep you foot, knee, and ankle in alignment.