One of the most popular tools for strength training is the exercise ball.  These balls are so popular because they are both inexpensive and versatile; the list of exercises you can perform with them is literally endless.So how can you get involved in the exercise ball phenomenon?  Here is a short introductory course.

First, what are exercise balls?  They are large, rubber, inflatable spheres that people use to strengthen various parts of their bodies. Most commonly, the balls are used for ab exercises, but they can also be used for your back, legs, and arms. They come in a variety of colors and size; you should pick the one that is best for you.

Basic stability ball exercises involves supporting one part of your body while exercising the other parts. For example, a common exercise involves placing your feet on top of the ball for support,  laying your back on the floor, and doing crunches. Other exercises work your obliques by performing the same crunches sideways.

Arm and leg exercises are possible with the ball, but they are harder than ab and oblique exercises. You can do modified pushups by placing your feet on the ball, you palms face down on the floor, and pushing your torso towards the ceiling. For legs, try placing your legs against the side of the ball and touching the top of the ball with your hand (while keeping your legs straight).

But the ball can also be used for passive exercises.  For example, sitting on the ball while working (using the ball as a chair) can help strengthen the lower back muscles. Using the ball as a backrest while reading in bed will strengthen your abs.

So where can you find exercise balls?  Any good sporting goods store should stock them.  Some privately-owned stores may not carry them, but large chains will have a variety of sizes and colors in stock. As you can see, learning to use and exercise with a ball is not very difficult. You can get a full workout with just that piece of equipment, as it can strengthen your legs, arms, abs, and chest.  It is a key piece of equipment for any gym.