Research published last year by psychologists at Harvard and Yale universities raises the possibility that even our weight is susceptible to the power of suggestion. The study looked at the health of hotel chambermaids over a four-week period. Half of subjects were told at the start that their work counted as good exercise that satisfied the recommendations of the US surgeon-general. A month later, they had lost weight and gained other health benefits such as lower blood pressure. Their uninformed colleagues showed no change.
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