What term describes the amount of time you spend exercising?

The term that accurately describes the amount of time you spend exercising is "Duration." Duration specifically refers to the length of time an exercise session lasts and is a key component of physical activity guidelines.

While "Time" might seem appropriate, it lacks the specificity required in the context of exercise terminology. In fitness discussions, the word "time" is often used more generally and can refer to various aspects beyond just how long an exercise lasts. However, the more precise term used to denote the length of exercise is "Duration," which clearly indicates the time period dedicated to physical activity, making it essential for planning workouts and monitoring one’s exercise program.

Thus, in the context presented, choosing "Duration" effectively conveys the intended meaning about the time spent exercising.