User: "I'm recovering from a knee injury. When can I start exercising again?"
ChatGPT: "It's important to consult with your doctor or physical therapist before resuming physical activity after an injury. They can provide guidance on when it's safe to start exercising again and what exercises are appropriate. Start with low-impact exercises, such as swimming or cycling, and gradually increase the intensity as you recover. Be sure to warm up properly and listen to your body. If you experience pain or discomfort, stop and consult with your doctor."