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Cardiovascular fitness training, also known as aerobic training, is sustained exercise involving the large muscle groups. This exercise should increase the heart rate to a designated range called the target heart range or exercise heart range. Sometimes you will see the terms "rate" or "range" used interchangeably but "range" is generally a scope of numbers which encompass the more specific "rate," which is usually one number. No matter which term is used, a range of …

…and even by using your own body as resistance. Common household products can be used when resistance training. The most important aspect of resistance training is correct performance of the exercise. Too many people become concerned with how fast an exercise is performed or how heavy a weight is being used. This means that the exercise is done incorrectly. This can cause injury and most often results in endless resistance training without benefit or results.