Technique: Attach a light resistance tubing to a low anchor point. Walk the handles of the tubing out till there is tension at the end range of motion. Bring both arms and legs into the air with legs extended. Push your lower back flat to the floor ensuring a neutral pelvis. While keeping braced abdomen, bring opposite arm and leg out to full extension and then alternate to the other side. Advantages: Great movement for core activation. Engages the abdominal wall, the lattismus dorsi, hamstrings and pelvic floor muscles. Faults: Lower back is not pushed to the floor and the pelvis is rotated. Legs are not straight. Tension is not maintained through the band at the end range of motion. Scaling: Same exercise can be performed without the bands. Less engagement of the lats and easier for the core to stay braced.