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  1. Physical fitness - Wikipedia

  2. Fitness: Definition, factors, and types - Medical News Today

  3. What Is Physical Fitness? - Human Kinetics

  4. Physical Fitness and Its Components - Physiopedia

  5. Fitness: What It Is, Health Benefits, and Getting Started

  6. Physical activity - World Health Organization (WHO)

  7. Exercise | Definition, Types, Principles, & Health Effects

  8. Fitness basics - Mayo Clinic

  9. Physical Fitness - SpringerLink

  10. Physical fitness Definition & Meaning - Merriam-Webster