Mean SSNA, cutaneous vascular conductance (CVC) and SR responses to whole body heating. During the initial period of heating, Tsk increased, but the Tcore did not rise. In the later period of whole body heating, Tsk was clamped at ~38 °C, while the Tcore increased. Mean body temperature (Tbody) was calculated as follows: 0.9×Tcore + 0.1×Tsk.