This is what I'd do during heat waves, not sure you might do this aswell though~
1. Swim whenever you can~ And when you can, try to long periods of time, I personnaly normally do five hours. (This will only work if you have a pool or theres a public one in your neighborhood.......well, I think you get a Pool is essential to do this XDD)
2. Stand in front of air conditioners alot, and put them on full blast~
3. Wear thin, light-coloured clothing. Dark colours attract the sun.
4. Avoid Blankets at all costs BI -shot-