Called Equinox + In the Wild, this gym is completely outdoors. Treadmills, ellipticals, and rowing and weight machines are all under a tent, as is a fitness studio. Bathrooms are in a well-equipped trailer, and the locker room is a sleek black lean-to. Hand sanitizer stations dot the turf-field grounds, as do instructional signs: “Give Each Other Some Room,” reads one. “Suit Up: Masks must be worn at all times except when actively working out,” reads another. This is Equinox’s second open-air iteration. Last month, its first In the Wild club opened in Los Angeles.