Relationships generally interest me, but none more so than those where correlation is misunderstood as causation. This logical fallacy, known as false cause, can be especially misleading when navigating the ‘exercise-to-lose-weight’ conundrum. It was not all that long ago when it was considered naïve by health practitioners to believe that increased activity contributed to fat loss. Louis Newburgh of the University of Michigan determined in 1942 that a 250-pound man would only burn three calories by walking up a flight of stairs. Newburgh calculated that “He will have to climb twenty flights of stairs to rid himself of the energy contained in one slice of bread!” The only thing Newburgh could say of exercise was that it would make that same man hungrier.