TECHNIQUE: Lower the TRX straps to calf - mid foot length. Place your wrists underneath your shoulder, while engaging your core, hips and shoulders. Maintain a static plank, alternate between each leg driving your knees toward your chest. ADVANTAGES: This movement is good for building hip flexor control, pelvic strength, and core recruitment. FAULTS: Common faults include dropping the hips, elbows flaring out, and knees not driving all the way to the chest. SCALING: Movement can be regressed to valslide mountain climbers or from feet on the ground. ONLINE TRAINING: www.sandandsteelfitness.com/online-training EXERCISE DATABASE: www.sandandsteelfitness.com/exercise-database PERSONAL TRAINING www.sandandsteelfitness.com/personal-training