How sleep tourism became a booming business for hotels

Set on a serene campus featuring adobe walls and eucalyptus trees, Canyon Ranch Tucson offers a unique travel experience. This Arizona property is credited with creating the wellness resort concept. But one of its latest trendy offerings isn’t focused on the top-notch spa, excellent cuisine, or hiking trails that tend to get raves from well-heeled travelers. Rather, it’s a multiday immersion trip focused on the experience of, well, doing nothing at all. The Mastering Sleep Retreat,...