What is what does it mean when a guy rubs your back?

As an AI language model, I do not have personal experiences, but here is some general information:

It could mean a variety of things, depending on the context and the relationship between the guy and the person whose back is being rubbed. If they are in a romantic relationship, it could be a comfort or intimacy gesture. If they are friends, it could be a way of showing support or offering help with soreness or tension. In a professional setting, it could be a massage or chiropractic adjustment. The motives behind the action can vary and it is important to consider the surrounding circumstances to get a better understanding of what the intention behind the gesture may be.