Since the dawn of time men have been pitted against each other in physical hand-to-hand combat, making this almost certainly the most ancient of Olympic sports.
It's a simple concept. Two men or women wrestle until one is declared the winner. Over the years, wrestling techniques have become more sophisticated and generally speaking the winner of any wrestling bout is the person who has the better technique, strength and overall fitness.
Greco-Roman wrestling appeared in the first modern games in 1896, and it was joined by Freestyle wrestling in 1904. The aim of the game is to pin your opponent to the mat, and though it requires massive strength and fitness at the highest level, it can be a lot of fun.
While Britain has never won an Olympic medal in the Greco-Roman, there are plenty of options for people to get involved in the sport from the grassroots up, with clubs littering the country.