The North American Wife Carrying Championship is a fun sport in which male competitors race while carrying a female teammate on their backs. The objective is for the male to carry the female through a special obstacle track in the fastest time. Several types of carry may be practiced such as piggyback, fireman's carry (over the shoulder), or Estonian-style which has the woman upside down with arms wrapped around the man's waist and her legs draped over his shoulders. Teams are also encouraged to create their own style. The sport was first introduced at Sonkajärvi, Finland. From there it spread to other parts of the world such as the United States and Hong Kong.