Haka, traditional dances of the Māori people, have been used in sports in New Zealand and overseas. Haka are performed to challenge opponents before matches. The dance form has been adopted by the New Zealand national rugby union team, the "All Blacks", the Māori All Blacks, New Zealand women's national rugby union team, the "Black Ferns" and a number of other New Zealand national teams perform before their international matches; some non-New Zealand sports teams have also adopted haka.[1]