2500kcal a day?

I'm still trying to understand what my average daily energy need is - it seems to me I'm gaining weight at above 2000. Maybe different due to the jobs we do?

Eating only once a day sounds interesting. I already only do one big meal a day, the rest is snacks, protein bars and similar stuff. Not sure I could manage the discipline, though on the other hand it would give me the ability to each pretty much whatever I want for that one meal.