It's not so much the feeling of hunger that's difficult to deal with, just the intense headaches and tiredness that comes with no food or water. Plus, your throat really hurts, it's dry, scratchy, and raw. I wanted to sleep and I did fall asleep in my 9am Middle East history class, which led to me appologizing to my teacher afterwards.
Another bad part is that when I actually did get to eat, my throat hurt so much it wasn't that enjoyable. Then there is sooo much food, and you want to eat all of it, but you get stuffed so quickly. I was a little sad by how little I could eat. And more sad how huge my stomach feels right now.
In the end, I'm very proud of myself for doing it. I don't know if it was more to prove myself to G-d or to myself, but I'm glad I did it. Here is to a great year. Cheers!