I think if you get asked to do this, then that's called doing your homework, and I try and do it.
As an actor, you're always at the service of somebody else's vision. In a play, it's more of the director's vision, and he or she's got their hands on you all the way up to opening night, and if it's a film, there are even more people.
I could be like everyone else and stop eating, but that wouldn't make me happy.