Breathe in. Breathe out. There. You just supplied your body with much-needed oxygen, some of which will make its way to your cells. When your cells use the oxygen, however, they leave some free radicals behind. Antioxidants are a cleaning crew, of sorts -- they clear away all those unwanted visitors.

When it comes to getting your antioxidants, are you turning to produce and other natural sources? Or are you looking to processed foods?

As so often happens in the food industry, when a health-related item becomes somewhat trendy, everything from soda to candy will be labeled to match the trend. You may not have to think back too far to remember a time when you had never heard of antioxidants. But now that they're in the public eye, you can find a wide variety of products with labels touting their antioxidant power.

Antioxidants are naturally found in many foods, such as fruits, vegetables and whole grains. When you include a wide variety of nutritious foods in your diet, you're doing a good job of supplying your body with the antioxidants it needs. There's no need to turn to products with artificially added antioxidants. You can even enjoy a treat -- cocoa (the closer to its natural form, the better) is a great source of antioxidants. So enjoy an ounce or two of dark chocolate, or -- better yet -- try Cacao Nibs.

Some nutrition experts worry that largely unhealthful products with added antioxidants will steer consumers down the wrong path. Marion Nestle, professor of Nutrition, Food Studies and Public Health at New York University, wrote, "Despite lack of evidence that additional antioxidants make people healthier (and may actually do some harm), these claims are so popular that food companies introduced nearly 300 new antioxidant-labeled products into U.S. supermarkets last year." And according to an article in Food Production Daily, up to 60 percent of consumers may purchase a product because of its antioxidant claims.

Registered Dietitian Mitzi Dulan, co-author of "The All-Pro Diet," tells That's Fit that you should be skeptical of all products that advertise their antioxidants. Dulan said, "Antioxidant-labeled products can be helpful if the consumer understands that the true benefits come from those foods which have naturally occurring antioxidants such as those found in acai juice and tart cherry juice versus foods where they are added through a supplement."

What about you? Do you rely on natural foods for your antioxidants? Or do you look for labels that advertise antioxidants?