Which of these is NOT a component of physical fitness?

Physical fitness refers to the body's ability to function efficiently and effectively during physical activity. Its recognised components are typically divided into health-related and skill-related categories:

• Health-related components: cardiorespiratory endurance, muscular strength, muscular endurance, flexibility, and body composition.
• Skill-related components: agility, balance, coordination, speed, power, and reaction time.

Academic intelligence is a cognitive ability related to mental reasoning, problem-solving, and knowledge acquisition. While it is important for overall personal development, it is not a component of physical fitness. It does not measure any aspect of the body's physical capacity or performance.

Body composition (the ratio of fat mass to lean mass), cardiorespiratory endurance (the ability of the heart and lungs to supply oxygen during sustained activity), and flexibility (the range of motion at a joint) are all established components of health-related physical fitness.