Where to goThe Catskills, The Lacandon Jungle, Bali
Why to go: To gain peace of mind
What to bring: Comfortable yoga clothes, mindfulness, mindlessness

Don't be misled by your preconception of yoga being relaxing— it can get pretty intense. A yoga retreat is ultimately a giant workshop for body and mind. The focus is on gaining mental clarity and leaving behind all the things that make you need a vacation in the first place, while surrounding yourself with friendly, fit people in a beautiful locale. There's a lot to like here.