Question: whats your experience with stuff that seems new agy at first look, like yoga, meditation and so on. Anything worth trying?

Case in point: i read in Feynmans book about deprivation tanks, and recently found out that they are available in bigger cities. (Berlin, germany in my case.) will try and hopefully enjoy that soon. Sadly those places are run by new-age folks that offer all kinds of strange stuff, but that might not take away from the experience of floating in a sensory empty space.