I've lived in the South and Midwest US my whole life. Reading the title and the article I had the reaction "Is this study a joke, air conditioning keeps people

I've lived in the South and Midwest US my whole life. Reading the title and the article I had the reaction "Is this study a joke, air conditioning keeps people cooler?" Reading the comments here I see that many folks are, in fact, surprised that the heat and humidity can be (literally) unbearable. Florida for example, was largely considered largely uninhabitable until the invention of refrigeration and pesticides to control the Malaria-spreading mosquitos.