The TRX single-leg squat is also known as the pistol squat. This exercise works your quads, hamstrings and glutes.
TRX Single-Leg Squat Form Cue
Hold onto the straps and face the base point. Lift one leg and sink down into a single-leg squat, keeping your chest lifted. Make sure the bending knee doesn’t extend past your toes. Exhale and squeeze your glutes on the way up.