It always amazes me that FITNESS is a multi billion dollar industry... Yet a solid, concise and universal definition of fitness is difficult to nail down.
Just ask anybody taking part in a physical workout plan, and exipure blog [visit the next site] even someone in the fitness market for that matter, to give you a clear definition of health and fitness.
You'll most likely be greeted with the "deer seen in the headlights" stare accompanied by nonsensical stammering.
If you do get an answer, it'll most likely be slanted toward the particular proficiency of the person asked.
For example...

A marathon runner is going to define fitness in terms of muscular and cardiorespiratory endurance... A power-lifter is going to define fitness in conditions of absolute strength... A bodybuilder will define fitness in conditions of muscle size and definition... etc.
But the overwhelming majority of people participating in a physical exercise routine are not professional athletes worried about the improvement of just one physical ability.
So, basing your definition of fitness in one certain physical skill doesn't result in a universal definition of health and fitness.