A method of regulating body temperature that involves (i) determining, via processing circuitry, if sensor data from a plurality of sensors is in a predetermined normal range, (ii) converting the sensor data to fuzzy values when the sensor data is not in the predetermined normal range, (iii) combining one or more related consequents of the predetermined fuzzy rules, (iv) evaluating the combined consequents to determine a centroid value using a centroid method; and (v) transmitting the centroid value to a thermal management system to activate the thermal management system to a predetermined activation level based on the centroid value, wherein the plurality of sensors include a core temperature sensor, a skin temperature sensor, a skin blood flow sensor, a cardiac output sensor, a neuromuscular activity output sensor, an electromyography sensor, a vibration sensor, and an imaging device.