Outside extreme temperature environments, our body temperatures remain around 98.6 degrees Fahrenheit, no matter how hot or cold the. At the heart of most models is a graph, a mathematical concept that seeks to explain how objects relate to one another. Golubitsky and Best said that graph theory can help explain and predict changes to homeostasis in the body. That explanation, they say, could be useful for biologists and others looking for ways to intervene when homeostasis breaks down. That approach could be expanded to other systems, Golubitsky said, though future study is needed to know for sure.