Increased Fitness Associated With 50-70% Reductions in All-Cause Mortality

Good and bad.

Good:

"Fitness reduces death-risk in dose-response fashion"

Get fit.

Bad:

"One of the largest studies ever to link exercise capacity to mortality risk should motivate physicians to pay as much attention to patients' exercise capacity as they do other major risk factors, researchers say."

Stay away from doctors and the sick care industry. They will only screw you up.