【Houseworknotgoodexercise，saysstudy（16）___Itevensaidthatpeoplewhodidthemosthouseworkwereusuallythemostoverweight．（17）___Thecontributionofdomesticphysicalactivitytomeetingcurrentrecommendationsforhealth．Itque】

　　Housework not good exercise，says study

　　（16）___It even said that people who did the most housework were usually the most overweight．（17）___The contribution of domestic physical activity to meeting current recommendations for health．It questions whether activities like do-it-yourself，gardening and housework are good exercise．（18）___but there is a danger that people incorrectly think housework is proper exercise．

　　A total of 4，563adults took a survey about their weekly physical activity．（19）___Researcher Professor Murphy said any physical activity should increase the amount of calories burnt．（20）___She said housework was"inversely related to leanness"．She said this suggested that either people overestimate how hard housework was an exercise，or they eat too much because they think they have lost lots of calories doing household chores．

　　A．However，her study found the opposite．

　　B．People who do housework usually eat more．

　　C．A new study says housework is not the quality exercise many people think it is．

　　D．The research showed that people who included housework as exercise tended to be heavier．

　　E．The study is called Does"doing housework keep you healthy"？

　　F．They think doing exercise is of great benefit to healthy．

　　G．It says any activity is better than none．