Bowflex power rod units are made for strength and resistance training. Power rods offer a combined weight of two hundred and ten pounds of pressure, which is spread out over ten different rods. The Bowflex Xtreme, Xtreme 2 and the Sport all feature five rods on each side.

The Bowflex Ultimate and Ultimate 2 have six power rod units for each side of the fitness equipment with a combined weight of three hundred and ten pounds of pressure for more advanced workouts. All Bowflex fitness machines and gym equipment can be upgraded to have a combined total of four hundred and ten pounds of resistance spread over fourteen power rod units, with seven on each side of the home gym system. You attach one or more of the power rod units that come with your Bowflex to the cable pulley system for a customized, efficient resistance training work out. Bowflex are used to strengthen muscles by applying resistance to the work out. This is not to be confused with a stair stepper, rower machine or any other types of aerobic machines or fitness trainers that also offer a form of resistance for a work out.

When you walk on a stair stepper, the steps have resistance to provide a more effective cardiovascular work out. The skier machine, rider machine and other fitness trainers use resistance just like the Bowflex power rod units, but the resistance is used to make a work out more intense and not used to strength train and build muscles as it is with the Bowflex. The Bowflex machines use the power rod units to build muscle and claim that it is better and more effective than aerobic exercises and other fitness trainers. The increase in muscle mass increase the metabolism rate as well. More calories are burned during a resistance-based workout.

Have you ever been in the middle of a work out and discovered you were just too tired to complete your routine? Muscle helps shape a body and it gives you the strength and energy you need to complete an effective work out. Bowflex resistance training enhances this muscle development. Bowflex claims their power rod units can be flexed repeatedly. Even if you use your Bowflex every day, year after year and the power rods should not break or lose their resistance ability in any way. The rod units come with a No-Time-Limit Warranty and offer you free replacements provided that it is still owned by the original purchaser and has not been misused, mistreated or abused in any way. The Bowflex power rod units are manufactured under quality control measures using the best and most flexible materials. The units are covered with a plastic coating that is extremely flexible and tested in different conditions found in a home workout setting.

The Bowflex power rod units are not the complete workout. For the power rod units to provide you with a good work out, you'll need to work out several times a week for at least 30 minutes and eat a healthy diet. You'll also need aerobic exercise in order to complete your work out routine.