The 10 foundations of fitness, as outlined by CrossFit, are: Cardiovascular/respiratory endurance: This is your ability to perform activities that require sustained effort for long periods of time, such as running, swimming, or biking. It is measured by your VO2 max, which is the maximum amount of oxygen you can utilize during exercise. Stamina: This is your ability to resist fatigue and maintain a constant level of effort over time. It is different from endurance in that it is more about mental toughness than physical capacity. Strength: This is your ability to exert muscular force. It is important for everyday activities such as lifting groceries or carrying children, as well as for athletic performance. Flexibility: This is your range of motion around your joints. It is important for maintaining good posture, preventing injuries, and improving performance in many activities. Power: ...