Weird that people seem to assert that causality is not established? There are hundreds to thousands of studies that show that pretty much all markers for mortality and morbidity go down with excercise, i.e. put someone regulalrly on a treadmill for a couple of month and pretty much all health markers improve.
People implying that the study shows only correlation really don't seem to understand how we establish causality in science.
People implying that the study shows only correlation really don't seem to understand how we establish causality in science.