Most people know someone who carries a cardigan almost everywhere they go. It appears in office bags, backpacks, car seats, and carry-ons, ready to emerge in overly air-conditioned restaurants, chilly meeting rooms, or unexpectedly cool evenings. From the outside, the habit can look like overpreparing for situations that may never happen. Psychology and health research suggest a different interpretation.
Human attention is constantly influenced by signals coming from the body, and temperature is one of the most persistent of those signals. Research on thermoregulation, interoception, and cognitive performance suggests that when the body becomes uncomfortable, attention is often pulled toward managing that discomfort.
