A grasp of psychology is also important in designing a good game; you want to know how players will feel at every point in the game. And it is vitally important that you can explain rules clearly in plain English.
The stomach's main function is digestion. It does this by: The stomach uses pepsin (enzyme) and peptidase (another enzyme) to break down proteins in your food. The acid released by the stomach doesn't break down food it only provides a good environment for the enzymes to work in.
The stomach has 3 main functions: 1  temporary storage for food, which passes from the esophagus to the stomach where it is held for 2 hours or longer. 2  mixing and breakdown of food by contraction and relaxation of the muscle layers in the stomach. 3  digestion of food.