People often assume your "core" is another name for your abdominal muscles, but it is so much more than that. Your core is made up of multiple muscle groups -- abdominals, hips, glutes, and pelvic floor. These muscles working together form your powerhouse and facilitate most, if not all, of your movement. To train your core to work more effectively and efficiently, you need to work all of the muscles involved to build a strong foundation. Below are three simple exercises you can add to your routine to strengthen and stabilize your body's core powerhouse.