nD ico Ca Emotional status It has been demonstrated in both man and animals that emotional states have a very definite relationship to digestion. Physical status Fatigue, either acute or chronic, has a very immediate and important influence upon digestion. d. Habits of Eating The influence of environment and character of service. Rate of eating is important. e. Guides to Adequate Nutrition (1) Hunger and appetite - regular not capricious (2) Weight curve - with allowance for family characteristics or type. (3) Objective signs of successful nutrition (4) Subjective signs of successful nutrition References: Bogert--Nutrition and Physical Fitness Meredith--Hygiene Kirkpatrick and Huettner--Fundamentals of Health Bradley--Tables of Food Values