"New MRI data out of the Heart and Stroke Foundation suggests the contrary: that “less fit” runners running a marathon are damaging their hearts for up to three months. The musculature of the human heart is made up of 17 segments. If one segment fails due to stress (say, from a marathon), adjacent segments pick up the slack. Unfit marathoners exhibited abnormally high amounts of overly stressed heart segments. Their hearts were working harder, and the work was concentrated across fewer segments. These abnormalities persisted for as long as three months after the marathon.
Okay, exercise induces muscle damage as a rule. That’s how we get stronger – by undergoing stress and muscle damage, and adapting to it by rebuilding our muscles stronger than ever. But muscle damage isn’t supposed to last for three months. Sure, even the study’s authors admit that the damage is reversible, but is that really an effective way to train?"
A martial arts instructor gave a telling quote years ago: "Too much work makes you sick, too little work makes you weak."
No comments:
Post a Comment