Infinity Fitness is a boutique fitness studio in University City, Missouri, serving the St. Louis area with small group classes for all ages, fitness levels, and abilities. The studio focuses on high-intensity, low-impact workouts and offers Pilates, barre, yoga, TRX, and related formats. Its reformer Pilates classes use resistance-based machines for full-body training, while barre classes combine sculpting and cardio intervals, yoga emphasizes slow flow and relaxation, and TRX uses suspension training to build strength, balance, endurance, flexibility, and core stability. Infinity Fitness emphasizes personalized attention, modifications, encouragement, and instructor training in anatomy and hands-on adjustments.