Cable flyes, when performed at the end of a training session, can serve as an effective finishing move for the chest. Since they are isolation exercises, they precisely target the pectoral muscles without much involvement from secondary muscle groups, like your shoulders or triceps, which are worked during presses. Ending your workout with cable flyes after compound movements will ensure that your chest muscles are thoroughly recruited. This helps in achieving better muscle development and encourages growth due to the increased time under tension, so using the exercise as your last movement of the session can maximize the benefits of your chest workout. Also, cable flyes particularly emphasize the stretched position, so performing it last will make sure your joints really warmed up to reduce the risk of potential injuries injuries.