I'm not really sure, Victor. They have no religious or medicinal significance whatsoever. I just happen to like them. I bought the gold one many years ago while browsing through the Diamond Exhange in New York. Then a couple of years ago, I was in Stresa, Italy (on Lake Maggiore) and came across a very nice silver bracelet in a jewelry store there. Since I have two wrists and I like them both, I thought why not wear one on each wrist. They're not as big as watches, and I would be less likely to get comments on two bracelets than two watches.
Oh, I also wear a gold necklace that I bought in Florence, Italy about 5-6 years ago. The necklace is two color gold and is even thinner than the gold bracelet on my wrist. But it's usually hidden under my shirts anyway.
And finally, I have another silver bracelet I got in London last year. But I don't wear that very often because it has a leather insert and I found out after I bought it and had it custom sized that I should not wear it in the shower because the leather might come out. So I only wear that one on special occasions.