Re: tips from someone not yet 50
Well, the body definitely can adapt.
I moved from the USA to live on the equator for 4 years. When I first got there, I was HOT outdoors, and FREEZING in the air-conditioned indoors. So I'd have to wear light clothing for outdoors and then bring something to bundle up in for indoors. After a while I got to where the outdoors just felt comfortable (sometimes cool) and the indoors felt comfortable (sometimes cool, sometimes warm) and in any case, I could be comfortable wearing whatever. Jeans, shorts, sometimes a t-shirt, sometimes long sleeves, flip-flops, shoes and socks.... and I could see people around me, some were wearing barely anything, others were covered head-to-toe in turtlenecks, coats, etc.
When less adapted americans would complain of being burning up, I would only be a little warm. They would be dripping in sweat, I'd only be slightly moist. So it's about adaptation, I think.
What about the whole "catching a cold" from getting caught in the rain? Yeah, right.
Although my dad would catch a bad cold EVERY TIME he would come home, very hot, then go into a cold room, and lie down to take a nap with bare feet and bald head. The extreme temperature change would somehow end up with him having a doozie of a cold. I could smell him from across the room that he had a cold and I would say, "Did you take a nap barefoot in the air-conditioning again?" YES.
I would like to know how barometric pressure and temperature changes affect health.