The concept of hygiene is related to medicine as well as to personal and professional care practices in the aspect of living. The term cleanliness or cleaning and hygiene are often used interchangeably, which can cause confusion. Other uses of term appear in phrases including: body hygiene, personal hygiene, sleep hygiene, mental hygiene, dental hygiene and occupational hygiene. Personal Hygiene such as cleaning food preparation utensils and surfaces before and after preparing meals are essential. This helps prevent infection and illness from moving from one place to another.