The result is: stomach and intestinal complaints such as an abdominal distension, poor bowel movements (blockage), flatulence, heartburn and burping. When the nutrients are eaten separately, the digestion process is much faster and improves bowel movements. The diet is shorter in the body and the metabolism is faster. What is this really about? Proteins and carbohydrates are both broken down in different places. The degradation of proteins mostly takes place in the stomach, and the breakdown of carbohydrates takes place already in the mouth, and further into the small intestine.