HOW: Begin this exercise on your hands and knees with your toes in the handles of the TRX. From this position, push through your arms and straighten your legs to assume a plank position. Once in this position, drive one knee quickly towards your chest and then alternate the knee to chest motion for the prescribed amount of reps or time.
FEEL: You will feel your core, shoulder, and hip muscles working as you perform this motion.
COMPENSATION: Keep your core engaged as you perform this exercise with a focus on not letting the TRX straps rock your body side to side.