I too, am according to labs, 100% healthy.
I realized when I lived in a walkable city, with public transportation, within riding distance (bike) to my place of employment it was really easy to keep active day to day. I would walk to the grocery store, ride my bike to my friends house, walk to the corner store, ride to work, constantly outdoors in my city. I kept fit doing nothing else. No gym, no going for a run just for the fuck of it, just daily life.
Since moving to the burbs surrounded by stroads with no walkability, my weight slowly peaked to where I am today.
I still, lol, have bitched about this so many times, including to my doctor, I am still angry that my favorite grocer is .6 miles measured directly from my front door (through wild woods and swamp/river there is no path). Instead, I have to take a highway to get there. There could be a walk way from my trailer park full of old folks and families to the store, a bridge over the river, its more a stream. But there's not, you must get into a car and drive a highway to the next exit.
Absurd.
I cannot discount this car centric part of our daily life has a massive impact on our weights and activity levels throughout our lives. I dont want to run around my boring neighborhood with no shade or crosswalks, just to get sweaty for "personal gains". Personally, I need more purpose than self care. I want to have it built into my life.
Thats the easy fix. But it's not so easy, I can't move, and my opinion here is in the minority amongst my community.
I'm going to have to start walking/running more in my stupid boring neighborhood because now in year 4 of being a sahm, I never leave my 1/4 arce lot anymore.
I feel like a failure everyday. Just know you're not alone.