Lie flat on the floor (on a mat) place your arms out to the side on the floor with your palms facing down.
Make sure that your head, legs and bottom are all in contact with the floor.
Engage your stomach muscles and grasp the sides.
Slowly lift your legs to a 90-degree angle, keeping your legs straight and not bending at the knees.
Pause for a second then slowly lower the legs back down.
Lie flat on your back with your legs stretched out in front of you.