This exercise is a total body workout, targeting the muscles of the shoulders, hip and core. It combines the side plank with a clam for a double challenge that can benefit your body in many ways.
Begin lying on your side propped up on one forearm with your knees bent and your feet in line with your tailbone. Your hips should be resting on the floor. Make sure that your shoulders, ribs, hips, knees, and feet are stacked.
Draw your abdominal muscles in as you lift the hips up into a side plank. Maintain that stacked position, as if your torso is sandwiched between two panes of glass and cannot tilt forward or back.
Keep your abdominal muscles drawn in and your neck and spine long as you lift the top knee, opening your legs like a clam, then closing them. Complete all your clam repetitions. Then slowly lower back down to the floor.