He later switched to Ashihara kaikan at age of 12 and earned the rank of black belt at the age of 18 .
Schilt began practicing Kyokushin kaikan at the age of 8 as both of his parents were practitioners .
Schilt later switched to Ashihara kaikan at age of 12 and earned the rank of black belt at the age of 18 .
Schilt began practicing Kyokushin kaikan at the age of 8 as both of his parents were practitioners .