that guy basically lives his job, though. he probably does that once a week, but has to get his body ready during the rest of the time
keep in mind that you cant just give up in a majority of the challenges or people will stop watching your show. then you cant eat for money
personally, id just tell them i will commit to the show, do it a few times (no more than a season. any less, then you probably aint getting paid much) & get a single fat cheque before bounce. couldnt do it as a long term thing. i enjoy gluttony, but probably wouldnt as a career. dying into a facefull of food in front of a camera & audience would be a shitty way to go