[Andy Reed]

Hi there

Hard to know exactly why things have gone awry without a deep dive into your training, but certainly over-training would be on the list. As far as the body goes, stress is stress, whether that be from training loads or psychological stress; the stress from travel is also probably more than we realize, and could potentially be at play. As you say, sleep, nutrition and illness can also be factors, so definitely worth evaluating these. Regardless of the exact cause, my suggestion would be to redo your aerobic threshold test, reset your HR training zones, and commit to a couple of months of aerobic base building, which may have to involve slowing down significantly. Lots of zone 1 and 2 work would be my training prescription at this point. Lastly, if things are way off, a blood panel might be necessary. I have seen iron deficiency etc present in a similar way. Hope that’s helpful. Andy