Lie on your back in the supine position with your legs extended and your feet together and your arms facing outwards at 45-degrees from your side, with your palms on the floor and your fingers spread.
Raise your head just off the floor and tuck in your chin.
Tighten your abdominal muscles to tilt your pelvis forward and push your lower back toward the floor.
Now, raise your upper body off the mat and at the same time lift your legs. Keep your legs straight and in contact with each other at the ankle and knee.
Raise your legs and bend your trunk to form a V-position at your core, use your arms to support your upward motion as needed.
At the top of the movement your knees and your hips should be aligned and your head up-right and in-line with your upper body.
Continue for the desired number of repetitions at a moderate pace.
Return to the starting position in a controlled manner.
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 build up to the full movement as required.