Eating mindlessly or "without attunement" as Evelyn Tribole says, was miserable. Just eating, eating, eating, with no regard for how I felt, if I was hungry, if it tasted good, or if I was full. It was news to me that nobody is suggesting that. That's not a thing you should be aiming for, or be concerned about if you can't do it. That's not what Intuitive Eating is about. It's not what "All In" is about. They're about mindfully reconnecting with what your body actually needs, and then honoring that. It's respectful and kind. It's not a "jumping off a cliff and damn the consequences" kind of feeling. I think that's how my disordered brain saw it. Either I obsessively restrict or I have to eat all day until I'm in pain. That's black and white thinking at work and not actually how it is. It's really a matter of relaxing, noticing how you're feeling, and then meeting those needs.
I will say that's difficult if not impossible when overexercising, and especially when overexercising while also purging or restricting your food. Both of those create urgency and push eat mode into high gear. It's hard to sort out what your body is saying under those circumstances because it's usually saying something like, "AAAAAAAGHHH!!!" When we're consistently well rested and well fed, this whole new conversation opens up. Preferences, subtleties, nuances, choices. It's a level of freedom and possibility that we never get to experience in an all-or-nothing diet mindset. It's easy and natural. That's what you're searching for, not the conviction to mindlessly eat more than you need or want.
The biggest part of it is not judging or correcting your food choices, just noticing, without any harsh criticism or corrective action. If you eat until you're horribly uncomfortable, notice. If you're going too long without food and getting too hungry, notice. If you want something special instead of the usual, notice. That's where it gets interesting and things can start to change. Maybe you save a few chips for later next time instead of eating the whole bag. Maybe you make breakfast bigger, or snack sooner, or eat something more substantial. Maybe you plan to have something fun after dinner. It's staying in the moment and looking at what you want and need right now. It's rejecting all the reactive drama.