In all fairness, I haven't heard or used the word for a couple of years now, so not sure to what extent this is true: "She says uitwaaien is a popular activity where she lives—one believed to have important psychological benefits. “Uitwaaien is something you do to clear your mind and feel refreshed—out with the bad air, in with the good,” she tells me. “It’s seen as a pleasant, easy, and relaxing experience—a way to destress or escape from daily life.”"