Volunteers pass out fresh vegetables for a Thanksgiving meal at the Alameda Food Bank in Alameda, Calif., in 2009. The percentage of Americans who report struggling to afford food has remained stubbornly near recession-era highs. Justin Sullivan/Getty Images hide caption

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After a hard day of bruising battle, ancient gladiators reached for a post-workout drink, according to an ancient account. New research backs that up. Stefano Bianchetti/Corbis hide caption

itoggle caption Stefano Bianchetti/Corbis

The Ingenues, an all-girl band and vaudeville act, serenade the cows in the University of Wisconsin, Madison's dairy barn in 1930. The show was apparently part of an experiment to see whether the soothing strains of music boosted the cows' milk production. Angus B. McVicar/Wisconsin Historical Society hide caption

itoggle caption Angus B. McVicar/Wisconsin Historical Society

Michelle Obama eats lunch with school children at Parklawn Elementary School in Alexandria, Va., in 2012. The first lady unveiled new guidelines Tuesday aimed at cracking down on the marketing of junk food to kids during the school day. Saul Loeb/AFP/Getty Images hide caption

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The Trader Joe's Peanut Butter Filled Pretzel: The salty-sweet snack that launched a bitter lawsuit. Courtesy of Tina Haupert hide caption

itoggle caption Courtesy of Tina Haupert

I want to hold your lunch! This 1965 lunchbox — considered "one of the Holy Grails" of lunchbox collecting — sold for $936.10 in 2013. It came with a thermos. Another mint condition sample sold for $1,625 last fall. Courtesy of Hake's Americana & Collectibles hide caption

itoggle caption Courtesy of Hake's Americana & Collectibles

A probiotic commonly found in yogurt seems to help women lose more weight and fat, a recent study finds. But you still have to eat healthy to see an effect. iStockphoto hide caption

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Britain's King George II: Snazzy dresser, adventurous eater. Hulton Archive/Getty Images hide caption

itoggle caption Hulton Archive/Getty Images