Definition of Fitness The word " fitness " means the ability to perform physical activities. This includes the strength of your muscles, joints and ligaments, the state of your endurance and the power in which your body is capable of moving. this does not mean " health ". A person who is fit may not necessarily be healthy and a person who is healthy may not necessarily be fit. " Health " covers a wide array of components which are usually under the umbrella word, "Wellness." "Wellness" in essence, covers all areas of health: mental health, emotional health, physical health, spiritual health, social health, relationship health, and so on. Basically, these are all the different components in a person's life that can affect their overall "well-being." So when it comes to " fitness ". a person may be fit -be active, participate in sports, be able to lift weights, change the shape of their body, run, j...