Precautions for use (mandatory reading)Check the connection: Before each use, please confirm that all buckles are locked to prevent the elastic tube from falling off and flying out, causing injury.Choose appropriate resistance: Beginners are advised to start with 1-3 tubes to avoid deformation or muscle strain caused by excessive resistance.Anti slip and anti fall: Please ensure that the ground is dry and anti slip when stepping on it; When holding, do not sweat from the palm of your hand to prevent it from falling on yourself.Avoid overexertion: When restoring movement, do not suddenly let go and let the elastic tube bounce back to its original position. Instead, control slowly to protect the joint.Maintenance: Do not expose to prolonged sunlight or come into contact with sharp objects to prevent aging and cracking