couch potatoesCouch potatoes beware: exercise may not be enough to overcome the adverse effects of prolonged sitting.

Getting 4 or more hours a day of leisure TV time significantly raises the risk of mortality or coronary problems, according to the researchers from department of epidemiology and public health at University College London.

After combining survey information and mortality rates from a study of 325 subjects over 4 years, the scientists determined that those who spent 4 or more hours sitting in front of a television or computer for entertainment were 48% more likely to die from any cause and 125% more likely to experience coronary issues.

The study appeared in the Journal of American College of Cardiology.

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