A fitness trainer can assist you with your repetitions on fitness machines and even guide you into proper form in order to reach your desired endurance, size, and strength goals. A fitness trainer can also serve as your spotter during these kinds of exercise fitness. Besides the typical fitness equipment used, muscle fitness also involves the use of the body’s own weight in order to reach your desired size and strength. For example, you can do exercise fitness like chin-ups and push ups in order to get well defined arms and chest. While your body may be the cheapest fitness machines out there, a fitness trainer will teach you that in order to increase your endurance and capabilities, investing in fitness equipment are a great way to build on your goals.