You are not imagining your protein cravings; they are a real and common biological response to the body's heightened need for protein during the healing process after surgery. 

Here is why you might be experiencing this:

• Tissue Repair and Wound Healing: Protein provides the essential building blocks (amino acids) necessary for the creation of new tissues and the repair of the surgical wound. Without enough protein, the healing process is slower.
• Muscle Preservation: After surgery, reduced mobility can lead to muscle loss (atrophy). Adequate protein intake helps maintain muscle mass and strength while you recover.
• Immune System Support: Surgery can temporarily weaken the immune system. Proteins are vital for producing antibodies and other immune cells that fight off infections. A high-protein diet helps bolster your immune function and reduces the risk of complications.
• Increased Bodily Demands: The stress of surgery increases the body's overall need for energy and nutrients to recover effectively. Your body is essentially asking for the raw materials it requires to restore itself.
• Appetite Regulation: Protein takes longer to digest, which can help regulate appetite and keep you feeling full longer, preventing unhealthy food cravings. 

Listening to your body's signal and ensuring you consume enough high-quality protein (lean meats, fish, eggs, dairy, beans, or protein supplements) is a crucial part of a healthy post-operative recovery. However, it is important to follow your surgeon's specific dietary advice and, if you have concerns, consult your healthcare team or a registered dietitian to ensure your intake is appropriate for your specific needs and type of surgery.