Feeling of hunger is very individual. For some people, it's no big deal. For other people, it is very annoying. I know that if I haven't eaten for a day, I start notice limping people more, and I can't stop watching small children, because I want to kill and eat them.

> Appetite is a feeling I would describe more psychological. I'm smelling something delicious and suddenly want to eat it.

It is psycho-physiological addiction. (smell is not psychology, it is physiological). It is like cigarette addiction. But it isn't a physiological need.

10h? That's not hunger, that's regular appetite.

Not having eaten for 2-3 days would be hunger.

Actually he described it quite well. Appetite is psychological, whereas hunger is a physical sensation of pain.

I'm replying to your post because I get hungry even quicker. I had lunch (rump steak, potatoes) at 1pm and now at 4:30, I'm hungry again. My BMI Is 21, with rather low body fat.

Still, that's appetite, not hunger.

Even with a BMI of 21, you can probably fast for 20-40 days with no irreversible damage, and that feeling you call "hunger" will not be there after the 2nd day.

You do not know what hunger is until you've felt it. I thought I knew what hunger was, until I fasted for 25 days. Then, I actually discovered what hunger is.

Is it a crinkly feeling in your gut? That could be your GI tract closing down since it has nothing to do.