GNC, the popular health and wellness store, is praised for its exceptional customer service and knowledgeable staff. Customers highlight the convenience of the location, often situated near gyms, and the friendly and professional assistance provided by employees like Mike and Griselda. These staff members are noted for their in-depth product knowledge, guiding customers step-by-step through their purchases and fitness journeys. Customers express satisfaction with the store's wide range of supplements, vitamins, and other health-related products, as well as the overall positive experience at this GNC location.