Do all breads have plastic yoga mat material in them or just the ones in fast food restaurants?

The substance, azodicarbonamide, is commonly used among fast-food chains as a dough conditioner because it makes bread more elastic. Subway's promise to remove it comes after a food blogger's petition went viral online and gathered more than 78,000 signatures in just a few days.

Even though the additive is USDA- and FDA-approved for use in food, the Center for Science in the Public Interest (as well as New York Sen. Chuck Schumer) want azodicarbonamide banned from food completely because of a slight risk that it can cause cancer. (It's already banned in Europe.)

It makes the bread more elastic? Yuck!

Subway is far from the only chain using it. Here are 11 more:

http://www.buzzfeed.com/deenashanker/yoga-mat-plastics-food