Solera Health Club and Spa, St. Louis

From the muscle-burning exertion of a personal-training session to the tension melting luxury of a Swedish massage, Solera Health Club & Spa furnishes everything a body needs to stay primed and polished. Three separate rooms filled with cardio machines, resistance machines, and free weights make up the health club, where personal trainers lead individuals through tailored routines designed to help them reach their fitness goals. To chisel the body for less dough, group personal-training classes give the same guidance as one-on-one sessions by giving each student one minute on each machine, creating a regimen akin to a relay race or a speed-dating session with the Transformers.

It's a different experience in the spa, where massage therapists and aesthetic experts help melt away the pain of strenuous workouts with a host of soothing treatments. Nine types of massage incorporate aromatherapeutic oils or warm volcanic stones to send muscles into a blissful stupor. Body wraps, scrubs, and facials, meanwhile, draw out impurities from the skin to leave exteriors hydrated and youthful.