GNC is a well-regarded business that offers a wide range of quality products and excellent customer service. The workers at the store are described as great, knowledgeable, friendly, and not pushy. They are willing to provide recommendations on the best products and help customers achieve their goals. The store policy of allowing returns of tried items within 30 days with receipts is also appreciated by customers. Overall, the reviews suggest that GNC provides a positive shopping experience with a small but well-stocked store and a staff that goes above and beyond to assist customers.