Sylvester Williams, a Denver Broncos nose guard, nabs Isaiah Crowell of the Cleveland Browns last October. If measured by BMI, Williams is obese. AAron Ontiveroz/Denver Post via Getty Images hide caption

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Ben Lecomte has swum across the Atlantic Ocean, and now he aims to traverse the Pacific, which will take him five or six months. Bongani Mlambo/The Longest Swim hide caption

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Ray Spaulding cooks apples in front of a class on cooking healthful desserts at the Portland VA withJessica Mooney, right, a clinical dietitian. About 80 percent of veterans are overweight and obese and another quarter have diabetes, according to the Department of Veterans Affairs. Conrad Wilson/OPB hide caption

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More than three hours a day could mean brain fade by middle age. Raoul Minsart/Masterfile/Corbis hide caption

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The number of people being diagnosed with diabetes has been on the decline since 2009. iStockphoto hide caption

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Four pregnant women sit in lotus position. Thomas Northcut/Getty Images hide caption

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Jorje Mendez has lost more than 45 pounds through weightlifting and other lifestyle changes. Trainer Johnny Gonzales, right, helps prediabetic patients at the gym he set up at the Lake County Tribal Health Clinic in California. Farida Jhabvala Romero/KQED hide caption

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Leahya Ellis and other spinning class participants use exercise as a way to shake away stress, anger and depression. Bastiaan Slabbers for NPR hide caption

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About 50 percent of the vegetables available today are tomatoes and potatoes, according to new USDA data. Lettuce is the third most available single vegetable. Legumes and all other vegetables make up 41 percent of what's available. Ryan Kellman/NPR hide caption

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