Ex-presidents are individuals who have previously held the office of President of a country, such as the United States. After their term ends, they often engage in various activities, including public speaking, writing books, or participating in charitable work. They may also provide advice to current leaders based on their experiences. In many countries, ex-presidents retain certain privileges, such as security details and access to official events. They may also be involved in political discussions and can influence public opinion through their continued presence in the media and community.