Intersting. I am also a remote software engineer, but either working "feels right" a lot less for me than for you, and I feel like spending time outside riding my bike a lot less than you, or my employer is a lot less tolerant of taking the day off to ride my bike because work just didn't feel right.

I am curious how many hours a day/week you work, and if you are open about this with your employer...

I wouldn't say that I'm taking my day off to go ride my bike without telling anybody, but I would say that working from home affords me flexibility to, say, take a few hours to get a massage, go work out, or take my time making lunch.

I make sure I'm aligning my personal technical interests with the kinds of projects I work on for the company, so work feels more like a fun puzzle to solve rather than slogging through tedium. Generally I don't work late into the evenings, but sometimes a problem is really just that fun to solve, and I enjoy spending time on it. Other times, projects may be less interesting, so I work fewer hours, letting myself rest. Burnout is real, and it sucks, and I avoid it at all costs.

My employer really just cares that I get my work done, not how many hours it takes to do it. If I'm getting "meets all" or "exceeds" in my yearly ratings, then I'm meeting or exceeding their standard, and we're both happy.