Signs that it may be time to change a fitness routine include hitting a plateau in progress, decreased motivation, or persistent fatigue. If workouts feel mundane or less challenging, it signals the need for a fresh approach, such as varying exercises or increasing intensity. Additionally, persistent soreness or discomfort may indicate that the body requires a new stimulus or recovery strategy. Listening to your body and recognizing these indicators can guide you to adapt your routine appropriately, preventing burnout and promoting continued growth and enjoyment in your fitness journey.