Official health advice that said household chores help keep you active has been proved wrong by the research, which shows that the people who do the most housework are also the most overweight. A study of the physical activity habits of 4,563 adults, carried out by Professor Marie Murphy at the University of Ulster found that women and older people were particularly likely to list " 1physical activity as a significant proportion of their moderate to 2physical activity". Murphy said: "We found housework was reversely 3to leanness, which suggests that either people are overestimating the amount of moderate-intensity physical activity they do through housework or are eating too much to 4for the amount of activity undertaken." Kevin Fenton, director of health and wellbeing at Public Health England, suggested the study could 5evidence that some people thought they were healthier than they actually were. "At an individual level there may be a 6to overestimate the level of 'good behaviour' we're doing and this is reflected when people use food diaries, pedometers (计步器) or apps to measure more 7what they have achieved." he said. But he defended everyday tasks as genuinely useful. He added: "From an individual 8, physical activities such as housework, doing the shopping and walking to collect children from school, can have 9impacts on physical and mental wellbeing. People who are even more active will often see greater benefits and it is important to recognise that healthy weight is just one of the potential 10of physical activity."A) account E) domestic I) perspective M) relatedB) adjusted F) gentle J) positive N) tendencyC) causes G) objectively K) practically O) vigorousD) compensate H) outcomes L) reinforce