March Madness is a high-energy college basketball tournament hosted by the National Collegiate Athletic Association (NCAA) in the United States, featuring 68 teams competing for the national championship title. The tournament takes place annually between March and April and includes both men's and women's Division I teams. Participants are divided into four geographical regions, with teams ranked and placed into brackets for a single-elimination format. Fans often engage in filling out brackets to predict winners, adding to the excitement of the event. Celebrations include attending games, hosting viewing parties, and enjoying food and drinks with friends and family. The term "March Madness" became popularized in the 1980s, and the tournament has become one of the most-watched sports events in the country.