vegetarian diets are typically higher in fruits and vegetables, promote faster metabolism, and are lower in fat and calories. it takes about 15 minutes to digest an apple, for example, while it could take a full day or even longer to digest a steak. only on work and duties. very often, people fail to watch their diets as they know they should or exercise frequently. as busy as people find themselves, they give up cooking nutritious meals for more practical ways of eating, like fast food or even frozen foods. 