What is the recommended weekly amount of moderate-intensity aerobic activity and strength training for adults?

• A. 60 minutes daily of any activity
• B. No specific requirement
• C. 15 minutes daily
• D. 30 minutes of moderate-intensity aerobic activity 5 days per week plus muscle-strengthening activity 2 days per week

Answer: (D)

Meeting weekly activity guidelines requires combining aerobic activity with strength training. For adults, the standard recommendation is at least 150 minutes of moderate‑intensity aerobic activity per week, ideally spread across most days, and muscle-strengthening activities on two or more days per week.

The described plan—30 minutes of moderate‑intensity aerobic activity five days a week plus muscle-strengthening on two nonconsecutive days—fits this exactly: it provides 150 minutes of aerobic activity and ensures the strength component is included as well. This combination delivers both cardiovascular and musculoskeletal benefits, aligning with widely endorsed guidelines.

Other options don’t meet these requirements. One option suggests 60 minutes daily of any activity, which isn’t specifically aligned to the moderate‑intensity aerobic plus strength framework and isn’t necessary for most adults. Another omits a stated strength component, leaving out an essential part of the guidelines. Another option only provides 15 minutes daily, which totals about 105 minutes a week and falls short of the aerobic minimum.