The components of physical fitness can vary depending on the source, but here are 20 commonly recognized components:

1. Cardiovascular endurance: The Ability of the heart and lungs to supply oxygen to the muscles during physical activity.
2. Muscular endurance: The ability of the muscles to sustain effort over an extended period of time.
3. Muscular strength: The ability of the muscles to exert maximum force against resistance.
4. Power: The ability to generate force quickly.
5. Speed: The ability to move quickly.
6. Agility: The ability to change direction quickly and efficiently.
7. Coordination: The ability to perform complex movements with precision and accuracy.
8. Balance: The ability to maintain stability and control during movement.
9. Flexibility: The ability to move joints through their full range of motion.
10. Body composition: The proportion of lean body mass to fat mass.
11. Reaction time: The ability to react quickly to a stimulus.
12. Bone density: The strength and density of bones.
13. Posture: The alignment and positioning of the body.
14. Range of motion: The amount of movement possible at a joint.
15. Endurance strength: The ability to perform multiple reps with a certain weight.
16. Explosive power: The ability to produce a sudden, strong force.
17. Reaction time: The speed at which an individual can respond to a stimulus.
18. Agility balance: The ability to maintain balance while moving quickly and changing directions.
19. Cardiovascular efficiency: The ability to transport and utilize oxygen during exercise.
20. Speed endurance: The ability to maintain high speeds over a prolonged period of time.