Lie on your back and bring your legs up to a table-top position with your hips and knees bent to 90 degrees.
Ensure there is a slight hollow in the small of your back.
Relax your upper body as you extend one leg down to the floor, whilst simultaneously raising the opposite arm up and overhead.
Maintain the table-top position with your other leg.
Do not allow your lower back to arch.
Bring this arm and leg back to the starting position and repeat with the other pair.
Ensure you keep your core strong throughout this exercise.
