[Qem]

I spent the first half of my life living 7 degrees south of the equator, in a city where temperatures in the hot season routinely go near 40o Celsius. I can tell first hand, it wrecks your sleep. Sleeping in a mattress is unbearable, even under low humidity and with a fan, your underside gets too hot, and the entire night is spent flipping in the bed. The only effective adaptation available to poor people, without AC, was to sleep in hammocks as a default. It avoids getting your underside too hot.