The Science of Health is a field of study that focuses on the promotion and maintenance of physical and mental health. HYGIENE is an important part of this field, as it involves practices that help to prevent the spread of disease and promote overall well-being. HYGIENE includes proper handwashing, wearing protective clothing, and avoiding contact with contaminated surfaces. It also involves proper nutrition, exercise, and adequate sleep. All of these practices are essential for maintaining good health and preventing illness.