Masafumi Kawaguchi is not interested in the past. Not even in his brilliant American football career.

What he values are his experiences, which have helped him establish his unique training method.

"European and American athletes use their bodies in a completely different way from Japanese athletes," said Kawaguchi, the representative director of JPEC (Japan Physical Education & Culture), a personal training gym in Tokyo's Minato Ward, during an exclusive interview with The Japan Times. "Our focus is to train Japanese athletes so that they can utilize their bodies as effectively as Europeans and Americans."