Set up: Tummy over fitball, or in 4 point knee position on the floor. Shoulders down, neutral spine and pelvis.
Set your core, ensure you switch on your pelvic floor (link back) and deep abdominal (link back) muscles at the same time Raise one leg behind you to a straight leg position, only raise as high as hip height or lower. Ensure lower back doesn’t arch as lag raises, maintain neutral spine. If in 4 point kneel position, slide leg behind so that foot stays in contact with the floor. Return to start position, repeat with opposite arm.