Preventive care is a type of health care whose purpose is to maintain wellness and good health instead of treating sickness or disease. Preventive care occurs before you feel sick or notice symptoms, and is designed to prevent or delay the onset of illness and disease. Prevention includes personal choices such as a healthy lifestyle, exercise, and diet, but it also includes health care services such as physical exams, screening, laboratory testing, counseling, and immunizations. Preventive health care services are important to maintaining good health. By doing so it can reduce both the burden and cost of disease on individuals and the health care system as a whole.