"I Don't Overeat and Get Plenty of Exercise" - Said every fatty ever ...the subjects in group 1 underreported their actual food intake by an average (+/- SD) of 47 +/- 16 percent and overreported their physical activity by 51 +/- 75 percent. Although the subjects in group 1 had no distinct psychopathologic characteristics, they perceived a genetic cause for their obesity, used thyroid medication at a high frequency, and described their eating behavior as relatively normal (all P < 0.05 as compared with group 2). CONCLUSIONS: The failure of some obese subjects to lose weight while eating a diet they report as low in calories is due to an energy intake substantially higher than reported and an overestimation of physical activity, not to an abnormality in thermogenesis. So they actually eat 50% more and move 50% less than what they admit.  Keep that in mind when a fatty tells how hard they exercise or how little they eat.  And this is probably skewed by the fact they are in a study.  In the real world it is likely much more. Full study for anyone interested in some scientific shitlording. http://www.nejm.org/doi/full/10.1056/NEJM199212313272701