Which guideline lists 40-60 minutes per day, or 20-40 minutes cardio twice per day?

• A. Obesity guidelines - duration
• B. Obesity guidelines - mode
• C. Cardiovascular guidelines - intensity
• D. Obesity guidelines - frequency

Answer: (A)

This question is testing how exercise guidelines are categorized by the amount of time spent exercising. The numbers given—40-60 minutes per day, or 20-40 minutes of cardio twice per day—specify how long to exercise, not what type you do, how hard you work, or how many days per week. That focus on session length is what makes this a duration guideline.

In contrast, mode would refer to the kind of activity (walking, cycling, strength training), intensity would describe how hard you push during activity, and frequency would indicate how often you exercise per week. So the best fit for these numbers is obesity guidelines framed by duration.