When I took a full remote position late last year, I also invested in a cheap treadmill for my home office, plus a laptop attachment. I get on it first thing every day, and do my normal inbox processing, generally at a pretty slow pace. Responding to slacks, emails, PRs is easy in this mode, no different than sitting at a desk. Lately I've added a 30-minute end of day shutdown walk on top of it. Review my todo list, check tomorrow's calendar, etc. Altogether, I average 2-3 miles per day.

I haven't been able to consistently operate on it for deeper work/code or meetings, but I don't know if I really need to.