Start on your hands and knees, with your hands under your shoulders, and knees under your hips.
Tighten your abdominal muscles, keeping your back straight and your gaze between your hands.
With your knee and hip bent to 90 degrees, lift your leg out to your side.
Control the leg back to the starting position and continue.
Ensure you keep your elbows straight and your abdominal muscles strong.
Minimise how much your pelvis rotates with the movement.
