NeurosciencePublished 24 September 2010Yawning and Stretching Predict Brain Temperature Changes in Rats: Support for the Thermoregulatory HypothesisMelanie L. Shoup-Knox · Andrew C. Gallup · Gordon G. Gallup · Ewan C. McNayFrontiers in Evolutionary Neurosciencedoi 10.3389/fnevo.2010.00108