Given what we now know about chronic cardio and it's incredibly damaging effects on the body That looks like FUD from somebody who's living depends on blogging

Given what we now know about chronic cardio and it's incredibly damaging effects on the body That looks like FUD from somebody who's living depends on blogging FUD. Of course, it's possible to train too hard, but this is very bad advice for the average (slightly overweight, not very active) person. If you worry about training too much, go talk to a sports physician and take a cardiac stress test. Or just run so slowly that you can breathe through your nose only.