Lie on your back in the supine position with your legs bent and your feet flat on the floor, with your arms facing outwards at 45-degrees from your side, palms down and fingers spread.
This exercise can be performed with your head on the floor or raised slightly depending upon your mobility.
Tighten your abdominal muscles to tilt your pelvis forward and push your lower back towards the floor. Now raise your upper body to a 45 degree angle to the floor and at the same raise your legs, keeping them bent, to form a V-position at your core, use your arms to support your upward motion.
At the top of the movement your knees and your hips should be aligned and your head in line with your upper body. Your feet should be just off the floor.
Return to the starting position in a controlled manner.
Continue for the desired number of repetitions at a moderate pace. A note of caution: do not jerk your legs and trunk to rise up into the V-position as this may overstress the spine, only perform the exercise to the range of your mobility and strength, use your arms to support your body throughout the movements.