Researchers created the bag on the left as an example of groceries bought in December while those on the right show groceries bought in January. After the New Year, some shoppers add healthier items to their carts but end up taking home more calories than they do during the holidays, a study found. Robyn Wishna/Cornell University hide caption

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U.S. soldiers at Long Binh base in South Vietnam line up to give urine samples at a heroin detection center before departing for the United States. About 20 percent of soldiers said they were addicts, but most didn't continue drug use back home. AP hide caption

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Now that the party is over, are you ready to make good on your New Year's resolutions? Kurt Desplenter/AFP/Getty Images hide caption

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U.S. soldiers at Long Binh base, northeast of Saigon, line up to give urine samples at a heroin detection center in June 1971, before departing for the U.S. AP hide caption

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