Your eagerness to exercise, or your aversion to exercise, comes, according to new research, from deep within, and correlates powerfully with your body type. No, readers won’t be surprised to learn that overweight people find exercise less appealing than lean people find it, but they might be surprised by the psychological depth of that response. Gretchen Reynolds reports in the New York Times on research conducted at the Key Laboratory of Cognition and Personality at Southwest University in Chongqing, China. Researchers at the lab recruited 13 healthy, young, normal-weight women and 13 who were overweight or obese, and had them complete two questionnaires, one about the extent to which they considered exercise desirable and another asking if they expected exercise to be unpleasant. The researchers also did brain scans of the volunteers while the watched pictures of people “being joyously active by running, dancing, leaping, playing tennis and such.” More unsurprising revelations: the scans showed negative emotions in the brains the overweight subjects who were watching active people, and the opposite response in the brains of leaner people. Read more in the New York Times.