You would be amazed at how much of the feeling of hunger is actually habituated, not your body actually needing energy. A horrible experiment you could do, but

You would be amazed at how much of the feeling of hunger is actually habituated, not your body actually needing energy. A horrible experiment you could do, but should not, is to set an alarm for 1 AM. Get up and go eat some cookies or ice cream, and then go back to bed for 3 weeks. Even if you have NEVER woken in the night because of hunger, you will now be EXTREMELY hungry every night, and naturally wake up to eat. It was my experience that after skipping breakfast for about a month, I now never even desire it. I do get my recommended Total Calories for the day each day, which is what makes it easier to adapt.