Physical warmth experiences can influence interpersonal warmth perceptions without conscious awareness. This study shows that holding a hot cup of coffee or a warm therapeutic pad increases perceptions of a target person as warmer, while holding an iced coffee or cold pad makes them seem colder. These effects are automatic and unconscious, similar to how the words "warm" or "cold" affect judgments. The findings support the idea that physical warmth activates psychological warmth concepts, which then influence social judgments and behaviors. The insula, a brain region involved in processing physical temperature and social trust, plays a key role in this process. The research aligns with attachment theory, which emphasizes the importance of early physical warmth experiences with caregivers for healthy social development. The study also extends to behavior, showing that physical warmth influences prosocial choices, such as selecting a gift for a friend rather than for oneself. These results highlight the deep connection between physical and psychological warmth, and the automatic influence of physical experiences on social perceptions and behaviors.Physical warmth experiences can influence interpersonal warmth perceptions without conscious awareness. This study shows that holding a hot cup of coffee or a warm therapeutic pad increases perceptions of a target person as warmer, while holding an iced coffee or cold pad makes them seem colder. These effects are automatic and unconscious, similar to how the words "warm" or "cold" affect judgments. The findings support the idea that physical warmth activates psychological warmth concepts, which then influence social judgments and behaviors. The insula, a brain region involved in processing physical temperature and social trust, plays a key role in this process. The research aligns with attachment theory, which emphasizes the importance of early physical warmth experiences with caregivers for healthy social development. The study also extends to behavior, showing that physical warmth influences prosocial choices, such as selecting a gift for a friend rather than for oneself. These results highlight the deep connection between physical and psychological warmth, and the automatic influence of physical experiences on social perceptions and behaviors.