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" People who get at least 150 minutes of exercise per week are more likely to sleep well and feel alert during the day, a study has found. Scientists at Oregon State University in the US studied a group of more than 2,600 men and women, aged 18 to 85. They found that 150 minutes of moderate to vigorous activity per week was associated with a 65 per cent improvement in sleep quality. In addition, people who exercised on a regular basis typically said they felt less sleepy during the day. The findings, which are published in the journal Mental Health and Physical Activity, highlight yet another benefit of regular exercise. Brad Cardinal, professor of exercise science at Oregon State University, said: &amp;#039;We were using the physical activity guidelines set forth for cardiovascular health, but it appears that those guidelines might have a spill-over effect to other areas of health. &amp;#039;Increasingly, the scientific evidence is encouraging as regular physical activity may serve as a non-pharmaceutical alternative to improve sleep.&amp;#039; According to the latest guidelines from the Department of Health, Britons should aim to take at least 150 minutes of moderate intensity activity in bouts of ten minutes or more. One way to achieve this is to exercise for 30 minutes on at least five days per week. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.netdoctor.co.uk/healthy-eating/news/a21769/exercise-affects-quality-of-sleep/>