There’s no shortage of theories about overtraining syndrome, a condition of pervasive exhaustion and very poor efficiency that lasts months or years and from time to time finishes athletic occupations. In fact, there are as well numerous theories. It is psychological, it’s neurological, it’s adrenal, it’s hormonal, it’s immunological, it’s cardiovascular—it seems to affect quite significantly each individual technique in the overall body, which makes it hard to pinpoint the bring about.
A new paper from a team led by Johanna Lanner of the Karolinska Institute in Sweden provides the scenario for a seemingly clear culprit: the muscles themselves. Producing