The Importance of Physical Fitness
By Jonathon Hardcastle
In order for one to be considered physically fit, the heart, lungs, and muscles have to perform at a certain level for the individual to continue feeling capable of performing an activity. At the same time, since what humans do with their bodies directly affects the state of mind, fitness influences to some degree qualities such as mental alertness and emotional expression.
Physical fitness is often divided into the following categories in order for people to be able examine its components or parts. Particularly, physical fitness is judged by:
1. Cardiovascular endurance: This is the ability of the body to deliver oxygen and nutrients to tissues and to remove wastes over sustained periods of time.
2. Muscular strength & endurance: Strength deals with the ability of the muscle to exert force for a brief time period, while endurance is the ability of a muscle, or group of muscles, to sustain repeated contractions or to continue to apply force against an inert object.

[Image]4. Body composition: Considered as one of the components of fitness, composition refers to the body in terms of lean mass (muscle, bone, vital tissue, and organs) and fat mass. Actually, the optimal ratio of fat to lean mass is an indication of fitness. Performing the right set of exercises can help people get rid off body fat and increase or maintain muscle mass. Jonathon Hardcastle writes articles on many topics including Fitness [http://ifitnesscentral.com/], Kids And Teens [http://4kidsandteens.com/], and Alternative HealthArticle Source: http://ezinearticles.com/?expert=Jonathon_Hardcastle
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