Shin-kicking, also known as hacking or purring, is a combat sport that involves two contestants attempting to kick each other on the shin to force their opponent to the ground. It originated in England in the early 17th century, and was one of the most popular events at the Cotswold Olimpick Games until the games ended in the 1850s. Download nextbelt on App Store and run your dojo on-the-go http://thenextbelt.com/fb.html