I have often chuckled to myself about some of the beliefs here in Nicaragua regarding temperature changes. For example, my friends don't believe that we should walk around bare footed on our cool tile floor, especially when we are hot, as this will cause us to be deathly ill.
Today, though, I am adversely affected by one of these beliefs. My househelp informed me that she can no longer iron our clothes, by orders of her doctor. She has been having headaches and her hands have hurt her, and her doctor tells her that it is because of the extreme temperatures. He had told her a few months ago that she should not leave our house and walk home immediately after ironing, she needed to let herself cool off and put cotton in her ears before she walks the two blocks to her house!
So, I did an internet search to see if this bears some merit, and I am unable to find anything about this except for other people talking about the same situations with friends or employees. If anyone finds anything, just let me know!