For a normal active individual, what is the recommended activity factor?

For a normal active individual, the recommended activity factor is typically in the range of 1.5 to 1.75. This range is established to account for individuals who engage in regular physical activity, which goes beyond mere sedentary behavior but does not imply intense training or athletic performance.

The activity factor is a multiplier applied to the basal metabolic rate (BMR) to estimate the total daily energy expenditure (TDEE). For those classified as "active," which often includes activities like moderate exercise three to five days a week, an activity factor of 1.5 to 1.75 is appropriate. This acknowledges the additional calorie requirements of maintaining an active lifestyle while not engaging in heavy or vigorous exercise.

In contrast, the other options provide figures that either underestimate or overestimate the activity level. A factor of 1.2 is generally designated for sedentary individuals, while options like 1.3 and 2.0 do not accurately reflect moderate to active levels. The range of 1.5 to 1.75 effectively supports the nutritional and energy needs of those who maintain a typical active lifestyle.