Also try to prevent solar gain in your house — blinds down etc during the sunny part of the day. And if you have some air conditioning but it’s struggling, make sure all your windows are locked down tight so the cool air isn’t escaping.

If that makes your home too dark, close the blinds on the south side of your house. (If you live down under, obviously, it's the north side ;)). Oh, fruit water. Slice up citrus fruit or, if you prefer less fructose, cucumbers, put them in a large pitcher of water. Helps encourage hydration.