A massager is a personal care tool used to relax muscles, relieve stress, and improve blood circulation. It simulates massage techniques through mechanical vibration, tapping, rolling, etc., helping to relieve tension and pain in different parts of the body. There are many types of massagers, including handheld, roller, foot, shoulder, and other special designs, suitable for different massage needs. Common functions include deep muscle relaxation, fatigue reduction, blood circulation promotion, and relief of tension and anxiety. Whether it is to relax the back after sitting for a long time or relieve muscle soreness after exercise, massagers can provide a convenient and comfortable massage experience, making them an ideal healthcare tool in modern life.