Interesting. I am also physically fit and if I don't have something to eat within the first half hour of getting up, I am cranky and definitely won't be doing anything approaching information work.

Seconding this. Additionally, I'm likely to fumble speaking tactfully as a result.

Exercise can push off hunger pangs for quite a while. Your body wants you to know it’s hungry, but if you’re exercising (read:probably hunting according to your brain), the pangs fade because they would simply be distracting.

Thanks. I've never heard it framed this way. I've mentioned my appetite diminishes after aerobic exercise, but a common response is that I'm weird.

Interestingly my appetite sometimes skyrockets after certain activities like bouldering or weight lifting, so the diminished hunger response must be a bit more complex of a phenomenon.

> a plate of normal food + fruit

What is "normal food"? Fruit seems like it would be more universally normal than pretty much anything else.

Sorry, I was not clear. A plate of some meat + some vegetables, or variations of that. The kind of things you expect to eat for lunch in France (and, broadly speaking, in Europe).

What I meant by that is that this is a full starter for the day, not a "late French breakfast"