I wouldn't say I have a set schedule per se, but I do tend to have a routine. Coffee and online news, fix breakfast, sometimes a little reading, sometimes on to whatever the activity of the day is, sometimes on to household chores. My routine does involve a decent amount of ass time every day (mostly reading), but I put in way less time sitting now than I did when I was working behind a desk.
Before I FIREd, I walked to work every day as a form of exercise. Now that I'm retired and have the time, I've expanded that daily walk to an hour + every day. Plus my wife and I walk shelter dogs three days a week. And I hunt, fish, and/or hike usually once a week or so. And I do yard work and cut/split/tote firewood (our primary source of heat).
My wife and I have gradually adjusted our eating and drinking habits over the last few years to something that is reasonably healthy and sustainable over the long term. We've always mostly cooked our own meals and tried to eat a reasonable amount of fresh produce, and now we've right-sized our portions and cut back a little bit on beer.
We've both lost a good bit of weight since I FIREd two years ago. For me, it's all about building activity and healthy eating into my daily routine; basically, making it a habit. Going on a diet is completely out of the question. I'd rather be drawn and quartered than go to a gym, so I have to organize my life around outdoor physical activity, preferably something useful. But if you are already a regular gym-goer, maybe you're better off doubling down on that commitment.
Bottom line, there's nothing wrong with some relaxing ass time every day, as long as it's balanced by some vigorous physical activity. I spend a lot more time reading than I used to when I worked, but overall I am more active. I think that's the big picture balance to shoot for.