It may seem like digestion only happens in your stomach, but it’s a long process that involves many organs. Together they form the digestive tract. Digestion begins in your mouth, where saliva starts to break down food when you chew. When you swallow, your chewed food moves to your esophagus, a tube that connects your throat to your stomach. Muscles in the esophagus push the food down to a valve at the bottom of your esophagus, which opens to let food into the stomach.