Originally Posted by Carbonfiberboy

This is interesting. I think the first thing we have to do, freshman dorm style, is define our terms: rest and exercise. I'll start by asserting that these are antonyms: if you're resting you're not exercising. So what's exercise? I'd say anything that raises your HR for a substantial length of time or can cause muscle damage. Rest then is not exercising. It could be weeding your garden, vacuuming the floor, that sort of thing, but not climbing 10 flights of stairs in your office building. That's still a little fuzzy, but maybe that will do. That done, I would say that we should differentiate easy days from rest days. On rest days, we do nothing. On easy days we might go for a long brisk walk or spend some zone 1 time on our bikes, and that's still exercise.

If we can agree on the above, then obviously we do not exercise on rest days. .