Learned helplessness is a particularly insidious form of this. What's fascinating is that in the studies, some animals never get it, they just keep fighting it. I wonder if that trait can be tapped in to, I doubt it'
an all-or-nothing parameter.
https://en.wikipedia.org/wiki/Learned_helplessness
This is why I advise gym newbies to quit and go home while they're feeling pumped, and not to stay so long that they feel exhausted and cranky. It's more important to create the positive subconscious association with the gym.
We get as conditioned as Pavlov dogs. If every time you get out mountainbiking you suffer, you create an anchor mountainbiking = suffering.
if you do it a lot, it gets reinforced a lot, and your body subcounciously will oppose it.