If short bouts are as beneficial as is claimed, there is no longer any excuse for not exercising sufficiently to dramatically improve your health. Photograph: Alamy/PA
The link between exercise and general health has been appreciated since ancient times. Doctors routinely recommend regular exercise for good health but gathering reliable scientific evidence on the effects of exercise is difficult, not least because of confounding factors such as genetics and lifestyle.
This is typified in two recent studies; one apparently demonstrating very positive effects of exercise on health and the other much more circumspect in its conclusions.
Epidemiological evidence showing the relationship between physical activity and mortality was reported in the classic
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