I live in Missouri and it has been as hot or hotter here the last month as in the Villages. The humidity here is very high as well. I have played 18 holes of golf more than a dozen times this summer in 100+ heat index weather, and I do a lot of yard work in it. It's like anything else in my opinion, you can't let it overly affect your life.
By the way there is nothing more refreshing than taking off sweat soaked clothes and jumping in the shower.