Having core strength is important for many reasons. Your core area includes your abdominal and back muscles. Strengthening these muscles can help you with stability and balance which can help prevent falls. It can also help relieve back pain and improve posture. Having a strong core can make it easier for you to play sports or engage in other physical activities like riding your bike or participating in a fitness class. Finally, core strength is important because it can help keep you looking fit and trim.