I do better with the heat than I used to. I have figured out that the heat hits me hardest when I also have a fever. I must have had a lot more fevers as a kid than I realized because it's only with getting healthier that I have figured this out.
For me, getting enough sea salt makes a difference. When I clearly need more salt because of the heat but I am having trouble with trying to consume it, I find that I also need the right oils and carbs for my body to tolerate and absorb adequate amounts of sea salt. We keep organic potato chips made with sea salt on hand. This is a really good way to get all three things at the same time. When it's really bad, I typically make either mashed potatoes for my son and I or I make potato soup if it's just me (he doesn't eat potato soup). Potato starch seems to be one of the best things for helping me absorb enough salt.