Thank you so much for your assistance! I’ll take this wise (rest, food, etc.) advice seriously. Looking back, I think in general I should have taken more and better rest and listen to the subtle signals of the body (such as residual fatigue after a recovery week). I am very motivated for training goals (such as a trail event in the Alps), but that can also be a problem. By the way, overtraining (although not to be underestimated) does not necessarily mean the overtraining syndrome right?
@Nalle4. I assume you are carefully rebuilding training now. Good luck!