Food combining is a diet plan based on our digestion’s physiological chemistry.  Different food groups require different digestion times.  Digestion is helped the most by using food that have roughly the same digestion time. For instance, protein and starches have different lengths of time.  Proteins take a long time to digest, while starches digests fast.  When applying food combining rules, the two should be eaten at different times, although protein can be eaten with green leafy vegetables.Di…