8 Reddit members with diabetes, including myself, just finished a community self-experiment looking at the effect of hot showers on blood glucose. If you’re interested, the final analysis of the data is posted here.
While we were not able to get firm answers to all of our questions, we did get a measure of the effect size and rule out it being a CGM sensor artifact (the leading hypothesis in the original post). We also learned a lot that will help guide future Community Self-Experiments.
Lastly, we’re still really curious about the person-to-person variation of this effect, especially for people without diabetes, so if you’re interested in trying this experiment yourself, please let me know.