Narayan has an excellent collection of food and train stories from India.
While we’re hurtling through space at a frightening speed and also revolving on the earth’s axis, since everyone else is doing it, we don’t notice it and eat normally. But when on a train, we have the leisure to see that other things are static, and we ourselves can move around inside the thing and it can create all sorts of pleasant sensations, all of which make us hungrier than usual.
If you haven’t done so, I warmly recommend reading them right away. Be warned you may get hungry.