卫生 (Hygiene) refers to practices that promote health and prevent disease. It includes personal habits like regular handwashing, dental care, and bathing, which help remove dirt, bacteria, and viruses from the body. Good hygiene is essential for maintaining overall health and well-being. In addition to personal hygiene, environmental hygiene is important. This involves keeping living spaces clean and safe, including proper waste disposal and sanitation. By ensuring a hygienic environment, communities can reduce the spread of illnesses and improve quality of life for everyone, especially vulnerable groups like children and the elderly.