Start with your chest lifted and legs in tabletop. Exhale as you rotate your upper body to the right, as if you're going to touch your left armpit to your right knee. At the same time, extend your left leg to straight at a 45-degree angle above the floor.
Inhale as you return to the starting position, keeping your head, neck and shoulders lifted off the floor, and returning the legs to table top.
Exhale to repeat to the opposite side, and inhale to return.
Repeat, alternating sides, for 20 reps on each side.