The modified side plank is a hip, core and shoulder strengthening exercise. It helps promote trunk and shoulder joint stability. Because it is weight-bearing through the arm, it is also a good exercise for bone health.
Begin lying on your side, propped up on one forearm. Your knees should be bent so that your feet are in line with your hips.
Place the top hand on your top hip and slowly lift your bottom hip off the ground as you engage your abdominal muscles. Hold for 5-10 seconds, then slowly lower down.