Response delays destabilize heat loss

Adults aged 40-60 move between humid heat and dry, cool air. This hypothesis asks whether stronger skin blood flow and sweating could destabilize heat loss if their effects arrive late. Thermoregulation, control of temperature, may act as delayed feedback: a response begins after conditions shift and overshoots. The model predicts growing heat-loss swings at high response strength and delay. Shortening delay should damp them while preserving peak strength. Tests would repeat transitions, measuring blood flow, sweating, heat balance and sympathetic nerve activity, the nerve signals controlling these responses. They must time vascular and sweating effects; ventilation could isolate cooling delay. Site arrangement and recovery after repeated signals need separate tests.