To make an effort in something to a ridiculous level.
To push boundaries which are beyond humanly possible.
Often linked to the 'Kawanishi-Thon' which consists of:
San Francisco to New York swim (can not use panama canal)
New York to San Francisco Run
San Francisco to Paris Bike (Using the Alaskan straits)
Oh I did a long run last night
Did you run it Kawanishi-style
Well no.....I didnt run from San Francisco to New York and back
I got into work so early today
Did you get up at Kawanishi-style o'clock
No I didnt get up at 2am for 7 years in a row to go to work
I went swimming last night
No I didnt swim 2.3 million laps
Hey man, I'm gonna do a Kawanishi-style drinkathon tonight
You're gonna drink 23000 pints of beer...good luck