One effective strategy for minimizing your chances of suffering from low back pain is to strengthen the core muscles. An exercise ball can be an essential component of core strengthening. Doing abdominal crunches with an exercise ball under the lumbar area not only works the abs, it also forces the low back and paraspinal muscles to balance your upper and lower body. In fact, many common exercises done on a bench, such as dumbbell presses, can be performed on an exercise ball. Exercise balls can be obtained rather cheaply from a sporting goods store or are supplied by most gyms. Furthermore, many other exercises, such as the "plank" (assume push-up ready position with elbows on floor instead of palms and hold) can be performed without an exercise ball in a gym or home. A good fitness publication or certified fitness trainer can help one develop an appropriate core strengthening routine. Of course, if you suffer from lower back pain, please consult your personal physician before beginning any fitness program.