Sure, exercise is great for cardiovascular health but to conclude that running a marathon can help you live longer may only apply to the healthy group of 138 people involved in the study and has to take into account many other lifestyle factors.

Medical Mythbusting Commentary for January 7, 2019

Source:
Running a marathon could help you live longer, study suggests

Reference:
Training for a First-Time Marathon Reverses Age-Related Aortic Stiffening

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