Set up with the TRX anchor behind you so you are facing away and standing on one leg, with the other foot in a strap low and behind and the opposite hand holding the other strap at shoulder height with the arm straight.
Keeping your balance, lower into a single leg squat while the foot in the strap travels backwards and your arm holding the strap travels upwards. Return to the start position. Try to maintain good hip and knee alignment as you perform your single leg squat.
