"Exercise buys you three to seven additional years of life. It is an antidepressant, it improves cognitive function and there is now evidence that it may retard the onset of dementia."

“锻炼能给你多带来三到七年的生命。锻炼是种抗抑郁剂，它能改善认知能力，现在有证据表明，它也许能延缓痴呆症的发病时间。

The advice from experts is that everyone should do at least 20 minutes of walking or jogging a day, given the sedentary lifestyles and changes in diet that have contributed to high death rates from heart disease. Exercise can also improve brain functioning.

鉴于久坐不动的生活习惯和饮食结构的改变是心脏病高死亡率的部分原因，专家的建议是，每个人每天都应该进行至少20分钟的步行或慢跑。锻炼也可以改善大脑功能。

Exercise brings benefits at whatever age the person starts. People who start exercising at the age of 70 are less likely to go on to develop a condition that leads to irregular or racing heart rates in 10 per cent of people aged over 80.

无论什么时候开始，锻炼都能带来益处。80岁以上的人有10%会患上导致心率不齐或心跳过速的疾病，从70岁开始锻炼的人患上这种病的几率更低。

"The study brings a bit more understanding of why physical activity has that effect," said Christi Deaton, Florence Nightingale Foundation Professor of Clinical Nursing Research at Cambridge Institute of Public Health.

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