Nigeria, March 15 -- Most people have experienced this simple moment. When someone stands up from a couch or chair, and you sit down immediately afterward, the seat feels warm. But have you ever wondered why the seat feels warm, or what this warmth reveals about our everyday experiences? The warmth lingers, almost as if it holds a trace of the person who just left, making the seat feel oddly comforting or even slightly unsettling. It is a common experience we rarely pause to think about. It is just one of those small, ordinary observations of daily life. Yet that brief warmth is quietly telling us something remarkable about how the human body works. In real time, what you are feeling is heat that comes from another person's metabolism. ...