Normal feeling?

I don't know if this is something that is normal, but I love the feeling of being hungry, not really the feeling, but knowing that I have not eatten anything all day, or barely anything at all. Just so long as I can count the calories and its less than 400 I'm happy. I was finally able to go on a run/walk for an hr and it felt so good. The little bit of food that I ate that day didn't even matter, and that makes me feel wonderful. I felt on top of the world when I was running getting rid of all those calories. Is this noraml? I feel like I'm a little kookoo!