Wow, my bullshit alarm is clanging loudly. I followed the link to this guy‘s blog and read the study he was talking about: in one study performed on a group of 102 MARATHON RUNNERS between 50 and 72 years of age, it was found that there was more heart disease in that group than in the control group of people approximately the same age who were not marathon runners. To extrapolate the “cardio is bad” because one group of extreme athletes had heart damage is a wild leap.