Exercise balls are one of the 20% that buys home exercise equipment by first adding physical activity to your lifestyle by using the effective, versatile and efficient piece of home exercise equipment finds its way into garages, closets and basements with the closing comments... "That thing didn't work." Also do an assessment of your comfort level with different types of ab exercisers and equipment. One of the most effective exercises for working those abdominal muscles. To do the exercise correctly, lie on a mat and press your lower back pressed flat. Place your hands at your sides or by your head, whichever is more comfortable. Be sure not to put any pressure on your arms or you will take away from the effectiveness of the exercise. When looking for an elliptical trainer, whenever possible opt for a rear drive system rather than a front drive system. Rear drive machines are far sturdier, more reliable, and provide a smoother motion for the user. The resistance system will vary according to price, with the least expensive models using a manual system, mid-range models