I was recently in one of these hot climates at peak times and did a lot of research on this while pushing my limits as an athlete. So many factors play into hu

I was recently in one of these hot climates at peak times and did a lot of research on this while pushing my limits as an athlete. So many factors play into human adaptability to heat even including things like how exposed your veins are (phlebotomists love you!). People think areas like Vegas are hot, but cities like Dallas can have higher wet-bulb temps (WBGT) due to humidity. WBGT is the gold standard for performance considerations in hot climates: Current WBGT - https://www.weather.gov/tsa/wbgt https://www.weather.gov/tsa/wbgt Fahrenheit - https://arielschecklist.com/wp-content/uploads/2017/01/CHART_A_FARENHEIT.jpg https://arielschecklist.com/wp-content/uploads/2017/01/CHART... Celsius - https://arielschecklist.com/wp-content/uploads/2017/01/CHART_A_CELSIUS.jpg https://arielschecklist.com/wp-content/uploads/2017/01/CHART... WBGT Work Recs - http://blog.mesonet.org/agriculture/wp-content/uploads/sites/2/2015/08/WBGT-Work-Rest-chart.png http://blog.mesonet.org/agriculture/wp-content/uploads/sites... These are good guides but don't let this info plant anxiety in your mind either. Heat can kill you over time, but if you get into a situation where you feel heat exhausted, stay calm and stick to a single plan to unwind and rest. Carry around a frozen water bottle or two if you're headed somewhere hot for awhile. Neck + palms are one of the best ways to cool core temps [1]. Pre-hydration is also important, water + electrolyte intake days before exertion affects performance. [1] https://en.wikipedia.org/wiki/Palm_cooling https://en.wikipedia.org/wiki/Palm_cooling