You said move about but stay short of pain.
Yes, but you interpreted that as move around pain - avoid movements that "might" cause pain. Two totally different things.
So from that how do you aim to repair a ruptured Achilles tendon for example. it has to be stretched and held for a period of time to elongate the tendon back to its pre broken state.
This can not be done by carrying on as normal and stopping short of pain.
I feel that you might have been experiencing discomfort, but calling it pain. Bit like the rest of the population and a big part of the reason that obesity levels are sky-rocketing.