Multiple outlets report that researchers are calling for “heat training” in saunas as a potential way to help people adapt to very hot weather. The articles describe the idea as using controlled exposure to high temperatures to improve how the body responds when temperatures rise during the summer. The coverage focuses on the concept that repeated heat exposure may help the body acclimatize, which could be relevant during periods of extreme heat. While the reports use similar wording and emphasize urgency around preparing for scorching conditions, they do not provide detailed trial results, specific medical guidance, or quantified outcomes in the excerpts provided. The claims are presented as advice from scientists rather than confirmed public-health directives, and the articles frame sauna “heat training” as a practical method to build tolerance ahead of hotter spells. Overall, the reporting highlights the potential role of controlled heat exposure, without detailing who should or should not do it, and without citing specific study findings within the provided text.