The food is easier to break down and absorb. For another, raw vegetables have more electrical energy. Transitioning into the Vegetarian Zone aking a dietary change can be difficult. Old habits and tastes are hard to shift. Cravings take time to die and suitable substitutions can be confusing.
Some people transition overnight and others take several years.
Unless you are facing a life threatening illness, it is best to go at your own pace. In cereal it is hard to tell the difference and in cooking it is nearly impossible to differentiate. Soy margarine for butter or Oleo. Carob for chocolate Mrs. Dash seasonings for salt Sea Salt, Celtic Salt or Red Mined Salt for regular salt. Cook with Olive Oil Flax Seed Oil instead of vegetable oil in salad dressings.