People should stop advising to stick to the Turbo...
It may have been me that Perpetual Dan kindly quoted, and that isn't what I was saying.
I'm suggesting that the challenge is to minimise. If you have space and a turbo at home, and you can stand any tedium, favour the turbo, or even use it exclusively. If you don't and you can't get one (and no-one can at the moment, from what I gather), the clear instruction from the government at the moment is that exercise and health are important enough to justify going out.
But the challenge is to do it while staying local. Again, what that means may depend on whether you're next to empty fields, a park full of other people also trying to exercise, or a dual carriageway. But not, "What am I allowed to do?", but "How can I do this within the limitations of where I live, and minimising possible contact?"
All that would mean that two people living next door to each other could still work to different solutions.