What is the Definition of Fitness?

The princeton.edu definition for is – the quality of being suitable. Suitable for what? For life? For bodybuilding? For powerlifting? For a particular job? For what? Princeton.edu provides a sample sentence: “They had to prove their fitness for the position.”

Interesting. I actually like this definition of fitness. I once made a short video where I stated something like, “Fitness has nothing to do with losing weight or gaining muscle. It has to do with being .”

A Practical Example

A bodybuilder friend of mine responded by saying, “You’re contradicting yourself.” do a little in word replacement:

What I’m saying is, “Being fit means that you are healthy.”

Apparently, according to my bodybuilder friend, fitness means the same as:

“Having a six pack means you are healthy.”


“Having big means you are healthy.”


“Being able to run 24 miles in a few hours means you are healthy.”

Here are my thoughts:

  • A six pack does not necessarily mean that you are healthy, because you could have gone through some extreme form of dieting that could be potentially harmful to your body. In this case you look healthy, but may not be much healthy once you get your blood work done.
  • Same goes for the guy with big biceps. How many guys are walking around with and inflated chest, along with a belly down to the ground? They’re just strong, but don’t look very fit. They wouldn’t be able to run very fast, nor would they be able to lift their own for high reps.
  • Finally, lets take the last example. Most distance runners are extremely skinny. They lack fundamental levels of and some even look sick- borderline . I would not call them healthy.

So then, what exactly is the definition of fitness? I would love to hear your thoughts.

About Parth

Parth Shah is the creator of ShahTraining.com which teaches people how to use mental mind tricks to conquer the world and become healthier and awesome in the process. Check out his Book Bodyweight Toughness Thanks, and enjoy the site!

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