It's never too late to start exercise -heart study

From the article:

People who said they had been active throughout their lives had about a 60 percent lower risk of being diagnosed with coronary heart disease.

Couch potatoes who changed their ways and began exercising after the age of 40 were about 55 percent less likely to be diagnosed with the illness than people who had always been inactive.

"Our results suggest that a more active physical activity pattern is clearly associated with a reduced risk of coronary heart disease, and that changing from a sedentary to a more physically active lifestyle even in later adulthood may strongly decrease CHD risk."