I used to work construction and when I was a teenager I worked on farms growing up in the rural South.
If you work outside all day you adapt very quickly to it. During the adjustment period you are chugging water all the time but you eventually adjust. It's a circulation adaptation that's been observed with special forces recruits.
> If you work outside all day you adapt very quickly to it.
Sort of yes, sort of no. In some industries, those who do hard labour in heat have a terrible death rate from kidney disease. There is a lot in the news about this in relation to sugarcane workers.
Eg:
https://www.theguardian.com/world/2012/oct/14/kidney-disease...
If you work outside all day you adapt very quickly to it. During the adjustment period you are chugging water all the time but you eventually adjust. It's a circulation adaptation that's been observed with special forces recruits.