澆園子是baseline stay active but no intensity. NHS recommends

at least 150 minutes of moderate intensity activity a week or 75 minutes of vigorous intensity activity a week. CDC defines a moderate-intensity heart rate zone as 50% to 70% of maximum heart rate. So a 45 year old, 50% of max heart rate is 88. 澆園子估計達不到這個心率,推剪草機應該可以

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