As a cover driver, we often do 5 different routes per week. Sometimes they are business heavy with lots of air conditioned businesses with multiple floors and bulk. Sometimes the routes are 230 + residential stops and no air conditioned relief in sight. Personally, I find it excruciating to get comfortable delivering in a well air conditioned business and then walk out the front entrance to a wall of aweful heat and humidity. I do better when I’m just balance out in the heat the whole time and my body just gets use to it. No ups and downs. What is your preferences?