Listening to your body doesn’t necessarily mean giving in to the urge to break your fast! If I feel the urge to end my fast early, I always try to listen for the real underlying problem. I ask myself “Hang on, will eating really fix the problem here? Or do I need something else — like a nap, or a walk around the block to clear my head, or a work break, or some ibuprofen?”
This really helps with emotional eating. I frequently have the urge to eat when I’m sad or upset, and eating really won’t fix those problems. But it also applies to other stuff. Like, if the problem is that you are sleep-deprived, food won’t fix it! :)