Sentence case is a style of writing where only the first letter of the first word in a sentence is capitalized, along with any proper nouns. For example, in the sentence "The cat is sleeping," only the "T" in "The" is capitalized. This format is commonly used in everyday writing, including books, articles, and emails, as it enhances readability. In contrast to other capitalization styles, such as Title Case or All Caps, sentence case maintains a more natural flow. It is often preferred in professional and academic settings because it presents information clearly and concisely, making it easier for readers to understand the content.