Key points from article :
2 hours running per week for 40 years adds up to about 6 months.
But expectancy increases by 3.2 years so a net gain of about 2.8 years.
Whatever someone’s pace or mileage, running reduced risk of premature death by almost 40 percent.
Smaller effect seen in walking, cycling and other activities.
The studies were published in the Journal of the American College of Cardiology and in Progress in Cardiovascular Diseases journal.
