That's an awesome realization and a dramatic change of perspective! It is remarkable that sometimes the slightest shifts create the largest impact over time. Low heart rate training is truly a test of patience, but I'm glad to hear you are beginning to witness change and improvements. I really believe you're feeling rewarded by being able to focus on sustainability and longevity versus just going harder. It's gotta feel great to see the views along the way too! Keep it up!