That's interesting - I always assumed it was the cold that made people's aches worse, but yes, it must be the humidity (or damp as they'd describe it where I'm from).
I do exercise and that's supposed to help but I never really notice any difference while I'm here, only just during this last holiday. I'll see what it's like next year when I go to Europe.
When we first moved here I used to walk around barefoot a lot but I have got crocs that I wear indoors now because they're quite cushioned on my feet and it helps prevent cracked heels (LOL I sound so glamorous

)
I think I'll have to move to a less humid country to live out my old age!