You 're trying to convince someone to do something, and they're saying "No, I don't like it." You 're asking them how many times they've actually done that thing and eventually they admit they've never done it, but still maintain that they know they don't want it. That's how many of us behave when it comes to food, and particularly healthy food.

The basic truth about eating healthily is that you ought to extend your selection a little bit. Most of us are going to have bellyache attempting a new meal, but we prefer what we're used to.