The term 'kind of hygiene' can refer to two different types of hygiene: ORAL and MENTAL. ORAL hygiene is the practice of keeping the mouth, teeth, and gums clean and healthy. This includes brushing and flossing teeth, using mouthwash, and visiting the dentist regularly. MENTAL hygiene is the practice of maintaining MENTAL health and well-being. This includes activities such as getting enough sleep, eating a balanced diet, exercising, and engaging in positive social activities.