Fifteen months of maintenance and my resting pulse is still changing

Just past 15 months of maintenance after losing 118 lbs. My weight has stayed inside a 3-lb window the whole time, so I mostly stopped checking daily. But my body is still doing quiet renovations. My waist tape is down 2.25 inches since last winter. My morning resting pulse dropped from 76 to 65, and I can walk the hill near my house while talking instead of panting. I can also tell tiredness from hunger now, which I couldn't do a year ago. I'm cautious about over-reading any single day, so I log trends weekly and ask what changed in sleep, stress, and movement. The odd part is these shifts feel more real than the weight ever did. Has anyone else further out noticed their body keep changing after the number went flat? Which signals did you trust most?