Which statement correctly describes the guidelines for vigorous-intensity aerobic training?

• A. 60 minutes total per week of vigorous activity
• B. 20-25 minutes on 3 or more days a week for a total of 75 minutes per week
• C. 15 minutes daily
• D. 90 minutes once a week

Answer: (B)

Focusing on how much vigorous aerobic work you need in a week and how long each session should be is the key idea. For vigorous-intensity activity, the guideline is about 75 minutes per week, usually accumulated in sessions of roughly 20–25 minutes on at least three days. The statement that specifies 20–25 minutes on three or more days for a total of 75 minutes per week matches this target exactly, balancing enough effort with distribution across days so you’re exercising regularly.

The other options fall short or don’t align with typical recommendations. One suggests only 60 minutes per week, which is below the minimum total volume for vigorous work. Another implies 15 minutes daily, which totals more weekly time but uses a shorter per-session duration than typically required for vigorous effort. The last option recommends a single 90-minute session, which lacks the necessary frequency across the week.