There is a great amount of controversy when it comes to the concept of proper “food combining”.
It is true that you do not need to combine your foods in specific combinations, but this causes your system to work much harder and expends much more energy.
Protein digestion occurs primarily in the stomach and it requires an acid environment. Starches such as bread require an alkaline (base) environment. Acid and bases cannot exist together when they are combined the result is a neutral environment. What is being referred to is the pH of the environment. A pH of 7 is neutral, below 7 is acidic and above 7 is alkaline.
When you ineffectively combine your meals you can experience bloating and create unfriendly bacteria in your digestive system. When a meal is poorly combined you very often will feel very tired after eating your meal.
A guide to eating with proper food combining is to eat fruit alone, eat protein with non-starchy vegetables and eat starches with healthy fats and vegetables. You should not drink water (or any man made concoction) with your meals. When you drink with a meal you dilute the digestive juices and cause your body to work much harder. The food does not effectively get digested when you flood your stomach with liquids.
Here are some links to help you learn more about proper food combining:
Do your own research and test the concept of proper food combining, then you can make your own mind up if it is a good thing or if it is just fantasy!