Doesn't anyone have useful advice/information? Anyone every been there? I've never been as bad off as this guy. Worst I've had it was finding I was grabbing lower gears and no HR, but got over it in a couple weeks and went on to have a fine summer, so overreaching, not classic overtraining. And yes, classic overtraining is a medical syndrome, commonly abbreviated OTS.

One thing I'd say in way of prevention I that I think the OP's HR zones might be too high. A Z1 top of 150 implies to me a LTHR of ~190, which seems awfully high for a 39 y.o. guy. IIRC, back in the pre-PEDS days, Lance recovered between races with recovery roller rides at a 114 HR when his max must have been around 220.