According to the latest recommendations, for substantial health benefits, adults should:

Question

BlackTom AI · Accepted Answer

Adults should accumulate at least 150 minutes of moderate-intensity aerobic physical activity per week to gain substantial health benefits.

Relevant knowledge points: Major public health bodies (e.g., WHO, CDC) recommend either 150 minutes per week of moderate-intensity aerobic activity, or 75 minutes per week of vigorous-intensity activity (or an equivalent combination), plus muscle-strengthening activities on 2 or more days per week. “Moderate intensity” means activities that raise the heart rate and breathing somewhat (e.g., brisk walking), while “vigorous” means substantially elevated heart rate (e.g., running).

Step-by-step reasoning:
1. The recommended weekly target for moderate activity is 150 minutes. A practical pattern is 30 minutes on 5 days: 30 min × 5 days = 150 min.
2. Equivalence: 1 minute of vigorous activity counts approximately as 2 minutes of moderate activity, so 75 minutes vigorous ≈ 150 minutes moderate.
3. Compare alternatives using simple arithmetic:
   - Option “10 to 15 minutes every day”: 10 min/day × 7 = 70 min/week; 15 min/day × 7 = 105 min/week. Both are below the 150-min threshold, so insufficient for the stated “substantial health benefits.”
   - Option “150 minutes of vigorous-intensity exercise per day”: 150 min/day × 7 = 1050 min/week, far exceeding guidelines and unrealistic/unnecessary for general health recommendations.
   - Option “resistance training every day”: Strength training is recommended at least 2 days/week for major muscle groups; daily resistance training is not the standard recommendation and could increase risk of overtraining.

Why the correct answer is correct: The statement “do at least 150 minutes of moderate-intensity aerobic exercise per week” exactly matches authoritative guidelines for achieving substantial health benefits. It is achievable (e.g., 30 min × 5 days) and evidence-based for reducing risk of chronic disease.

Other options are incorrect for the reasons above. Final answer: do at least 150 minutes of moderate-intensity aerobic exercise per week.

According to the latest recommendations, for substantial health benefits, adults should:Single choice

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