Cardio fitness training is a fundamental part of any exercise program. The words "cardio" is interchangeable with "aerobic" and is short for "cardiovascular". Improvement in the ability of the heart to deliver oxygen to the muscles and in the muscle's ability to generate energy with oxygen results in increased aerobic fitness. Engaging in aerobic training has many benefits. Many people report feeling more "energy" from their program. Aerobic capacity is associated with a faster metabolism, which means that stored body fat burns faster. This enhances weight loss.

The type of activity you choose is less important than the quality level that you maintain. Tennis, racquetball and basketball can be considered cardio if they are performed with adequate intensity and duration. Otherwise, the Scottsdale, Arizona climate is perfect for swimming, running, cycling and hiking are great forms of aerobic training. Of course indoor machines such as the elliptical, treadmill and stair-master are primarily designed to increase aerobic fitness.

A few general guidelines for cardio fitness training: