I know someone that went to prison in the USA. Like a dumbass they got in a fight, and next you thing you know they were held for a trial for a few weeks. He had never worked out before. Reasonable size guy, not huge, not skinny.
According to him, he went into the yard thing and some guys said 'hey come train', slapped him on the bench with a ridiculous amount of weight. He said he knew he could not lift it, but took one look around at - well a yard full of murderers etc - and thought appearing to be a weakling may not be the wisest choice. He lifted it.
Said he never had such motivation in his life. I had bugged the guy to work out for years, he refused, but apparently I am not as scary as a pack of murderers, as he surely did it when they told him to.
Perhaps - that is it. We lift for fun and crap, for them it is more vital in that environment[?]