ANSWER MY CONVOLUTED QUESTION
It's very practical: I am trying to build a HM plan.
1. Let's say we have a hardish workout. B+, with medium volume, in a pre-sharpening phase, say.
2. The point of the workout this day is for an "internal load." Threshold, specific speed endurance, HM and Marathon pace work, etc. Not highly neurologically taxing, with recovery for the next 1-2 days...
3. but, I am sore and I want to get some recovery work in. All other things being equal, it might be nicer to do this as soon as I get some decent benefits.
Q: Can I eat something, stretch, roll, and do some easy running within the next hour? How about biking? This is for recovery purposes.
Is there some reason it's better to wait 4-6 hours?