The humor of dieters. If your daily calorie intake is 2000 kcal, you can eat up to 4 kg of beets per day.

We had a soldier humor. American and Russian generals inspect the dining room.
The American:
The daily calorie intake of the American soldier’s food is 3000 kcal.
The Russian general thinks for a moment and then says:
“No, our soldier won’t eat that much trousers.