Step 1: Lie on the back with legs extended. Keep leg rigid the entire movement.
Step 2: Bring legs out as far as hips will allow. Hold for 1 count.
Step 3: Return to starting position in controlled manner.
Tips: Keep the legs rigid by squeezing the glutes. Control the movement all the way and back in. Do not allow the back to go into hyperextension.
Link™ to Exterior: Attached to external anchor
Stance: Lying on back. Legs fully extended