'I drank my food for 30 days'

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After drinking meal-replacement formulas for 30 days, Brian Merchant lost 10lbs in weight - along with a lot of his social life. He says that he did end up becoming more productive, but the boredom of "slugging the monochrome glug" had him question the psychology of his mission. (Image: Food that has been turned in to mash. Credit: Watcha/ Thinkstock)