SparkPeople Stability Ball Workout

Using stability balls during exercise is quite simple. Here's an easy example. Stand up with your feet wide apart. Pretty easy, right? The wider your base is when standing, the more grounded you are. Now bring your feet completely together. Still simple, but a little harder to hold your body still. Now lift one foot off the ground. This is a lot harder because you have to balance yourself. Your muscles in your legs have to work harder. Your foot is probably shaking back and forth a bit to keep your body upright. Your entire core-your abs, obliques, lower back, and hips-are working overtime.