The 'Shindex' is the distance between your big toe and the top of your knee. It is the range between as short as you can make your foot to as far as you can extend your toe and is important in placing kneebars.
The 'Shindex' is the distance between your big toe and the top of your knee. It is the range between as short as you can make your foot to as far as you can extend your toe and is important in placing kneebars.