Supporting details are pieces of information that help explain, clarify, or enhance a main idea or argument. They provide evidence, examples, or facts that make the main point more convincing and easier to understand. For instance, if the main idea is about the benefits of exercise, supporting details might include statistics on improved health, personal anecdotes, or expert opinions. These details can take various forms, such as statistics, quotes, or examples. They are essential in writing and speaking because they strengthen the overall message and help the audience grasp the significance of the main idea. Without supporting details, arguments may seem weak or unsubstantiated.