What if the tv shows and movies we watch are actually training us for real life events?

Think of any movie like movies like 2012, or tv shows like the boys, or any other movie like this that has a lot of accidents,deaths,war, etc. What if these shows are used to train our minds for what's to come? Like, how people in a war have to train so they can stay calm when they're in a war. What if these shows and movies are like training for that so when we need to take action, we can do it with ease? Just a theory I thought of, tell me what you guys think.