This exercise is a great full body shaper. It engages your core, obliques, quads, shoulders, wrists and glutes.
Start by positioning yourself in plank position. Then place your right hand in the middle of your mat and push your hips up. Your body should be in a straight line from your head to your heels. Extend your left arm above your shoulder and look up at your left palm and start to lift your left leg as high as you can. Hold this pose for 30-60 seconds. Do not worry if you cannot lift your leg. Do what you can. If this exercise is too difficult for you to hold you can come down on your elbow. Do 8 on each side 2-3 sets.