Physical fitness will be to the human body what fine-tuning would be to an engine. It's not much of a race, it's a pursuit. In its most basic meaning, fitness and health is an overall state of good physical health. It's a foundation for a long and successful life.
Fitness and health is usually measured by periodic assessments measuring strength, endurance, agility, coordination, and flexibility. Health and fitness is the capacity of the heart, lungs, blood vessels, and muscle mass to function at optimum efficiency.