Getting in shape takes more than aerobic exercise.
While aerobics are an important component to overall fitness, you also need to incorporate muscle building workouts several times a week to achieve a well balanced exercise program.
The benefits of aerobics are well known.
When you exercise aerobically you strengthen your heart muscle as well as your entire cardiovascular system.
There are two types of muscle building workouts that will either allow you to gain muscle mass or tone your existing muscle.
The goal of a low rep, high weight muscle building workout is to increase muscle mass, or plump up the muscle to its greatest volume. Lifting heavy weight causes the muscle fibers to swell and you will notice a significant increase in the mass of muscle under your skin.
The goal of high rep, low weight muscle building workouts is to tone the muscle and make it stronger without a significant noticeable change in mass. Women often perform toning workouts in order to sculpt their muscles and make them appear more defined and bodybuilders select programs that allow them to increase mass.