【答案解析】It"s exhausting, time consuming and although it counts as physical activity, housework does not improve health or help to shed those excess pounds, British researchers said.
【正确答案】
【答案解析】In a survey of more than 2300 elderly women in Britain, 10 percent said they enjoyed brisk walking, one percent did more than 2.5 hours of gardening a week and more than half reported doing heavy housework.
【正确答案】
【答案解析】Women in the survey who walked vigorously for 2.5 hours a week or did an equal amount of gardening were less likely to be obese and had a lower resting heart rate, which is a sign of physical fitness.