体育运动可以提升脑力
Scientists have uncovered evidence the sport not only keeps people trim but also boosts brain power.
科学家已经找到证据证明体育运动不仅能让人保持苗条身材，还能提升脑力。
The research found that people who keep fit are more likely to have larger brains, better memories and clearer thinking.
They also found that unfit people tended to have smaller brains and reduced cognitive skills.
The findings add to a growing body of evidence which links exercise with helping protect the brain against ageing and also aiding it replace dying cells.
This might reduce the risk of debilitating illnesses and diseases such as Alzheimer's.
Researchers are not yet sure why exercise helps to protect brain cells but some research in mice has produced results.
Mice, examined at the National Institute on Aging, in Baltimore, found that cells in the hippocampus, an area of the brain used for memory, were actively reproducing while their fatter peers were in decline.
Linda Clare, professor of clinical psychology of ageing and dementia at Exeter University and a member of the Global Council on Brain Health told The Sunday Times: 'Moderate-intensity aerobic activity such as brisk walking, cycling or running can produce changes in brain structure and function.'