"Prevention includes a wide range of activities—known as “interventions”—aimed at reducing risks or threats to health. Primary prevention aims to prevent disease or injury before it ever occurs. This is done by preventing exposures to hazards that cause disease or injury, altering unhealthy or unsafe behaviors that can lead to disease or injury, and increasing resistance to disease or injury should exposure occur. Examples include legislation and enforcement to ban or control the use of hazardous products, such as asbestos, or to mandate safe and healthy practices, such as use of seatbelts and bike helmets; education about healthy and safe habits, such as eating well, exercising regularly, and not smoking; and immunization against infectious diseases."