Fitness Center, Wauwatosa 8700 W. Watertown Plank Road Milwaukee, WI 53226 Get Directions Main Number: 414-805-8656 Our NX Level locations are open by appointment only. Please call to make an appointment. Services at This Location NX Level Sports Performance Training Blood Flow Restriction Training Golf Performance Nutrition Evaluation for Athletes Runners' Clinic Postpartum Core Retraining and Strengthening Sessions