The recommended amount of physical activity for adults is at least 150 minutes of moderate-intensity activity or 75 minutes of vigorous-intensity activity per week, or a combination of both, spread throughout the week.
Let's analyze each fitness plan based on this guideline:
-
3 days of running 30 minutes, 2 days of walking 30 minutes
- Running (assuming it's vigorous) for 3 days: 3 x 30 = 90 minutes
- Walking (moderate intensity) for 2 days: 2 x 30 = 60 minutes
- Total: 90 + 60 = 150 minutes (meets the recommendation)
-
3 days of 45-minute HIIT classes
- High-Intensity Interval Training (HIIT) is typically vigorous intensity.
- Total: 3 x 45 = 135 minutes (does not fully meet the recommendation)
-
5 days of swimming laps 20 minutes
- Swimming laps (moderate intensity) for 5 days: 5 x 20 = 100 minutes (does not meet the recommendation)
-
3 days of weightlifting 20 minutes, 2 days of 30-minute Zumba classes
- Weightlifting (generally moderate) for 3 days: 3 x 20 = 60 minutes
- Zumba (moderate to vigorous) for 2 days: 2 x 30 = 60 minutes
- Total: 60 + 60 = 120 minutes (does not meet the recommendation)
Based on the analysis, the only fitness plan that meets the recommended amount of physical activity per week is:
3 days of running 30 minutes, 2 days of walking 30 minutes.