JennaRN said:

Pet owner bonus of training: my dog is also losing weight because we're walking 2-3x more than before.

Exercise-induced nausea amplification with training: I learned the hard way that intense exercise within 12 hours of injection can make nausea much worse. The combination of delayed gastric emptying + exercise-induced blood flow redistribution is rough on the GI system.

My workaround: inject Friday evening, do low-intensity activity Saturday, and save my intense workouts for Tuesday-Thursday when the GI effects have subsided. Timing your training around your injection schedule is a real optimization strategy.

Adding the numbers, since they settle part of this. One practical note: write down what you did and when, before you need it. Reconstructing a timeline from memory three months later is how people end up unable to answer the one question that would have resolved it.

Dr.ReproEndo said:

Exercise-induced nausea amplification with training: I learned the hard way that intense exercise within 12 hours of injection can make nausea much…

Coming at Dr.ReproEndo’s question from a different direction. The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either. Those three things can all be true at once, and most arguments here are two people holding different parts of that.

A narrower follow-up, since the general answer is now clear:

How would you tell the difference between that and the alternative explanation?

Closing the loop on my own question.

Closing this out. What actually changed my mind was the point about waiting for a trend instead of reading a single measurement, which is embarrassing in hindsight and worth saying anyway.