In CrossFit's fitness model, which two factors plot fitness on the initial 2D graph before age is added as a third dimension?

• A. Power and duration
• B. Endurance and strength
• C. Speed and agility
• D. Power and age

Answer: (A)

Power and duration are the two axes because the CrossFit model measures fitness as work capacity across different time scales. Power is how much work you can do per unit of time, and duration is how long you can sustain that effort. Mapping these two factors creates a 2D landscape of performance across short to long efforts. Age is then added as a third dimension, shifting that landscape to reflect how capacity changes with aging. So the best answer is the combination of power and duration.