Dr.ReproEndo 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.

One concrete data point for the thread. Keep the original post as written when you update it, and add the correction underneath. An edited-away mistake is invisible to the next person who makes it.

LarryQC_SD said:

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

Adding the part of the answer the thread has not reached. The distinction that resolves most of these threads is between what is true on average and what is true for one person. Both are real; they answer different questions and get quoted as if they were the same one.

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

What would you measure differently if you were starting again?

Closing the loop on my own question.

Reporting back with a partial result, because a partial result is still better than silence. Two of the three things suggested helped; I cannot separate them and I am not going to pretend otherwise.