Here is a Preparation for Surgery video for Nashville Weight Loss Solutions, created by Cyrano Video. This video covers everything the audience should and should not be doing after surgery to heal and live a healthier life. The gastric bypass is a bariatric and metabolic procedure that works in two ways: it creates a physical change in your body and a chemical change. The physical change reduces the amount of food a person eats at one time and where the calories are absorbed during digestion. The chemical changes affect the signals in the body that control blood sugar levels, whether a person feels hungry or full and how their body processes food.