1 Sit upgright on the mat with your legs stretched out long and straight before you. Place your hands on the mat behind you. Now push your hips up until you are in a reverse pullup position.

2 Tighten your buttocks and position yourself in a straight line. Life/kick one leg up as high as possible, being careful to not strain yourself. Try to get your leg as close to your midline as possible while making sure that your supporting leg holds its place. 

3 Lower your leg halfway as illustrated, then bring it up to previous midline location once more. 

4 Bring your leg back to the mat so taht you are once more in the starting position. Repeat with your other leg for 3-5 more sets.