The classical belief is that there are 5 components to fitness:

1. Muscular Strength
2. Flexibility
3. Cardiovascular Endurance
4. Muscular Endurance
5. Body Composition

According to Proponents of Crossfit, there are 11 components to fitness:

1. Agility
2. Balance
3. Body Composition
4. Cardiovascular Endurance
5. Coordination
6. Flexibility
7. Muscular Endurance
8. Muscular Strength
9. Power
10. Reaction Time
11. Speed

By actually going through every component and variable minutely, and by eliminating the overlapping or redundant components and introducing 2 new factors, I seem to arrive at 10 comprehensive components of fitness.
I call them the Battlefit 10:

1. Muscular Strength
2. Flexibility
3. Agility
4. Cardiovascular Endurance
5. Muscular Endurance
6. Body Composition
7. Power
8. Speed
9. CNS Conditioning/Mind-Motor Coordination
10. Mental Conditioning

Agree, disagree or have something to add?
Let’s discuss this in the comments shall we?

Regards,
Pushkraj Shirke