Instead of joining "big box" gyms that have cardio machines, weights, and classes in everything from spin to yoga to bootcamp to Tabata, the fit-minded are signing up at specialty workout studios, Nichols says. "People want more personalized attention, specialty classes, and trainers and owners who know them by name,” she explains. Both franchised small studios (such as Flywheel Sports, Barry’s Bootcamp, and Exhale) and independently owned boutique gyms are popping up nationwide, as the trend has expanded beyond major metropolitan areas.