amidst his years of studying, lundgren honed his karate skills by training hard in the dojo for five years, attaining the rank of 2nd "dan" black belt in kyokushin in 1978. he captained the swedish kyokushin karate team, and was a formidable challenger at the 1979 world open tournament (arranged by the kyokushin karate organization) when he was only a green belt. he won the european championships in 1980 and 1981, and a heavyweight tournament in australia in 1982. in 1982, lundgren graduated with a master's degree in chemical engineering from the university of sydney. during his time in sydney, he earned a living as a bouncer in a nightclub in the renowned king's cross area.