Participants in the Sydney Thirsty Hash House Harriers 2014 Red Dress Run pose for a group photograph. The running group, which has branches all over the world, has roots all the way back to a band of British soldiers in 1938. Richard Milnes/Demotix/Corbis hide caption

itoggle caption Richard Milnes/Demotix/Corbis

Currently, half of all products served in the school lunch program must be "whole-grain rich," which USDA defines as products made of at least 50 percent whole grain. According to the new standards, by the start of the next school year, schools must use only products that are whole-grain rich. Rogelio V. Solis/AP hide caption

itoggle caption Rogelio V. Solis/AP

In an effort to make the roadways safer, Colorado set a marijuana DUI blood standard for drivers. But it's difficult to actually measure how high a person is. iStockphoto hide caption

itoggle caption iStockphoto

The ranks of bicycle commuters are growing, though men are almost three times more likely than women to ride to work. Tobias Ackeborn/iStockphoto hide caption

itoggle caption Tobias Ackeborn/iStockphoto

McDonald's was the featured sponsor of the annual meeting of the California Dietetic Association in 2014. Alan Broadhead/Flickr hide caption

itoggle caption Alan Broadhead/Flickr