Craft an Ideal Workout Plan for Your Client

As a fitness trainer, I am planning a new workout routine for my client who is Client's Age years old and has the goal of Client's Goal . The client has been exercising regularly for Client's Exercise History and prefers a mixture of cardio and strength training exercises. Can you help me design a personalized, effective, and safe workout plan that aligns with their goals, age, and exercise history? Please make sure the plan includes a variety of exercises to prevent boredom and plateau, with a balance of intensity and rest days to promote recovery and prevent injury.