I think you've summed up everything that makes for a good way of life in just a few paragraphs! I don't claim to follow this directive all the time. But I am aware of this body perception and I pay attention to the signals I receive. If I nevertheless tend to exceed the limits that my body shows me, it's because I like exactly that feeling. Every sportsman, every athlete will understand that. And I don't want to take every pain as an opportunity to retreat into total mindfulness rigidity. Everything must remain in the right proportion. As so often... ;-))