Colds not too hard to deal with at all. As the other poster mentioned, when outside, the trick is layers.
Inside, it’s actually very easy to trap heat. Knowing where and how it dissipates in a house makes a huge difference, but it’s generally much easier to heat a place than cool it.
Summer storms are the best! That feeling of anticipation as the pressure builds up, then the way the temperature drops, before the rain hits and it just washes the heat away (sometimes!)
That’s what got me thinking about this question initially; the home construction. I understand there’s a lot that can be done tree cover, air flow, and decent thermal material, unfortunately it seems that’s often deemed too expensive in places that aren’t consistently warmer.
I actually read an article yesterday that stated apparently siestas are are dying thing, as they result in more work and less sleep.
https://edition.cnn.com/travel/spain-late-night-culture-end/index.html