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Absolutely.
You can be trained for it I'm sure - to such a close degree to be almost the same as the real thing - but that is not 99% of the people in regular life..

saying that - during my travels I came across a 'trained ' person who could not handle a real life stress situation ( it really wasn't that stressful , imo).

And on the other hand - I came across a 'trained person' who went without food for over 3 days, without complaining about his situation, and got on with his job.

Which was silly,- as I had plenty of money at the time, and made sure he was well fed when I found out!
...but it's the principal - which I respected immensely - of not asking - just getting on with life.

This kind of strength of character is not the norm..
( I don't include myself in his level of 'strength of character' btw .)