University of Chicago medical student Manny Quaidoo adds a pinch of salt to the spinach feta frittata he's learning to cook as part of a culinary medicine class. Monica Eng/WBEZ hide caption

itoggle caption Monica Eng/WBEZ

Ten-year-old Jake Herrera and his Los Angeles team run around the diamond as a warmup for baseball practice. Benjamin B. Morris for NPR hide caption

itoggle caption Benjamin B. Morris for NPR

Mindy Przeor founded an after-school and summer running club in Mesa, Ariz. Jason Millstein for NPR hide caption

itoggle caption Jason Millstein for NPR

Bite into that bread before your main meal, and you'll spike your blood sugar and amp up your appetite. Waiting until the end of your dinner to nosh on bread can blunt those effects. iStockphoto hide caption

itoggle caption iStockphoto

Bill McKelvey created Grow Well Missouri with a five-year grant from the Missouri Foundation for Health to help create more access to produce — and the health benefits that come with growing it yourself. Kristofor Husted/Harvest Public Media hide caption

itoggle caption Kristofor Husted/Harvest Public Media

On the left, olive oil, which is low in saturated fat and high in monounsaturated fat, which may lower bad cholesterol levels. On the right, coconut oil, which is 90 percent saturated fat and may raise bad cholesterol levels. iStockphoto hide caption

itoggle caption iStockphoto

Eating eggs with your salad helps boost absorption of carotenoids — the pigments in tomatoes and carrots. Photo illustration by Meredith Rizzo/NPR hide caption

itoggle caption Photo illustration by Meredith Rizzo/NPR

In the current version of the Fitnet App, the camera of an exerciser's smartphone captures data from him (upper left), while a prerecorded trainer guides him through a workout. A clock (bottom center) shows elapsed time. The orange dots (upper left) indicate he's following her routine well, as judged by the camera and phone's app. The app can also estimate the exerciser's number of steps. Courtesy of FitNet hide caption

itoggle caption Courtesy of FitNet

Soda delivery in Bosque de Chapultepec, Mexico City. Between 1989 and 2006, the consumption of sugary drinks increased by 60 percent per capita in Mexico. Omar Bárcena/Flickr hide caption

itoggle caption Omar Bárcena/Flickr

Horses, riders and runners crossed three streams in the course of their 22-mile race through the hills of central Wales. The average finish time was the same for both species — four hours. Ryan Kellman and Adam Cole/NPR's Skunk Bear hide caption

itoggle caption Ryan Kellman and Adam Cole/NPR's Skunk Bear

There's a growing body of evidence suggesting that compounds found in cocoa beans, called polyphenols, may help protect against heart disease. Philippe Huguen/AFP/Getty Images hide caption

itoggle caption Philippe Huguen/AFP/Getty Images