I enjoy fasting. Nothing very long (my longest fast was 72 hours), just small daily fasts that last into the middle of the afternoon. Fasting provides a jolt of energy and good feeling.
Too much food makes me feel lethargic, depressed, anxious. I don't know the exact science of it (ketosis plays a role), but I rarely feel these feelings during a fast, though I have an occasional physical symptom.
One thing fasting does is change my conscious state of mind. I become wired, extra sensitive, more aware. This hasn't always been the best state of mind for creativity, or at least focused creativity needed to sit and write (though I'm writing right now).
Fasting may help me avoid depression and anxiety, but I'm in no way “relaxed” during a fast in the sense that I'm calm and easy-going. When I fast, I could run circles around my non-fasting self.
When I write I like to be relaxed. If I have something going on, or I'm overly stressed or distracted, I have a very difficult time getting the words out, if I can write at all.
Fasting is all of those “negative” feelings. It's both stressful and distracting, and because I'm doing it on purpose, it's also “going on”. But when I push through it and write anyway, I find that this need for everything to be just so is merely a mind game I play with myself.
When I stop playing the game, the writing happens despite what else I'm doing.
I think it all comes down to perfection. It's similar to writing 10,000 words in a day. If I don't trust myself, and instead allow perfectionism to sabotage my goal, then I can never write that much. I've held myself back.
Fasting is the same way. I want everything to be perfect, but when I'm fasting I can't have that ideal. It's not possible. I've learned something valuable about myself.
I can write despite distractions, despite stress. If fasting teaches me anything, it teaches me that. I'm writing this right now, and I'm fasting. I haven't eaten in fourteen hours or so. Maybe longer. Yet, because I'm not clinging to an ideal of perfectionism, I'm having no problem letting my words out.
It's mind over matter. It's mind over distraction and stress. It's a sense of “I can do this, and nothing will hold me back.”