I prefer to be acclimated to my environment and not excessively consume energy products to reduce momentary discomfort.
My naturopath told me that I needed to sweat more and actually recomended a weekly sweat at minimum, in northern areas this is done in a sauna. Also recomended against any type of anti perspirant use. When you sweat you are self cooling but also ridding your body of toxins. I use salt on my skin areas to reduce odor from bacteria.
My rig has AC but prefer fresh air while driving, and set up air flow for fresh air when parked and I am in the van. When necessary, I cool my body by swimming in cold water or with a cold water bath. Since I am doing a basin bath, after soaking my head, feet, and pouring water over the rest, I am cool enough to sleep well. For a quick cool down, you can use a mister, or soak your forearms or feet in cold water.
When I have to be in air conditioned areas, I try to avoid being in the air conditioning for long periods of time as this makes me less acclimated to the heat. I never sleep in AC. -crofter