Hygiene refers to practices associated with ensuring good health and cleanliness. Such practices vary widely and what is considered acceptable in one culture may be unacceptable in another. In medical contexts, the term "hygiene" refers to the maintenance of health and healthy living. The term appears in phrases such as personal hygiene, domestic hygiene, dental hygiene, and occupational hygiene and is frequently used in connection with public health. The term "hygiene" is derived from Hygieia, the Greek goddess of health, cleanliness and sanitation. Hygiene is also a science that deals with the promotion and preservation of health, also called hygienics.

Personal hygiene is the first step to good grooming and good health. Elementary cleanliness is common knowledge. Neglect causes problems that you may not even be aware of. Many people with bad breath are blissfully unaware of it. Some problems may not be your fault at all, but improving standards of hygiene will control these conditions. Dandruff is a case in point. More often than you know, good looks are the result of careful and continuous grooming.

The hormones that create acne are the same ones that can make you feel like you're suddenly styling your hair with a comb dipped in motor oil. Each strand of hair has its own sebaceous (oil) gland, which keeps the hair shiny and waterproof. But during puberty, when the sebaceous glands produce extra oil, it can make your hair look too shiny, oily, and greasy.

Hundreds of displaced families pitched tarpaulins as tents on the river bank. Drinking water facilities in this settlement were minimal, so people had to either use the contaminated floodwater or walk as far as Lalita did to get drinking water. The situation was worsened by open defecation around the settlement area due to the absence of toilets.

When you cough or sneeze, you send tiny germ-filled droplets into the air. Colds and flu usually spread that way. You can help stop the spread of germs by Covering your mouth and nose when you sneeze or cough Cleaning your hands often - always before you eat or prepare food, and after you use the bathroom or change a diaper Avoiding touching your eyes, nose or mouth.

Hygienic transformation: The processor responsible for transforming the patterns of the input form into an output form detects symbol clashes and resolves them by temporarily changing the names of symbols. This kind of processing is supported by Scheme's "let-syntax" and "define-syntax" macro creation systems. The basic strategy is to identify bindings in the macro definition and replace those names with gensyms, and to identify free variables in the macro definition and make sure those names are looked up in the scope of the macro definition instead of the scope where the macro was used.

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