I guess I don't see a necessary connection between taking a trip somewhere and health. I
do see the advantages of disconnecting from work/email for 30 days. But why do I have to fly to Hawaii or Europe or something to do that? Can't I take 30 days off to putter around my house, reconnect with friends/family in the area I haven't seen enough recently, read a few books, participate more in local cultural activities I neglect due to being too busy, etc.? To me, the most relaxing vacation is taking time for myself in my hometown, with people I know.
I find vacations sometimes interesting and educational (see other societies, etc.), but not generally relaxing. To me, packing, flying places, and living in hotels is a bit stressful. To some extent, it actually makes me feel more busy, because it's one more thing, along with work, that gets in the way of me spending more time on the local stuff I'd like to spend more time on.