Do pros put more effort into their play than an average player, or is playing at that high of a level just as easy for them as it is for the average person?

I'm a mid masters zerg, so when I watch pros play, I can definitely see a similarity between their games, and the games I play. The difference is that they do everything better, as do their opponents. When I put myself in the player's shoes as I watch them deal with multipronged drops and harass, I feel stressed out, and wonder how they can possibly manage all of that without feeling the same way.

Do they have to try harder than I do when they play their games, or is it all automatic? Like, if I were to play a gold player, is requires little effort to win. Is it like that for them too, if they are playing a masters player who they severely outclass, or do they still have to try to win those games?

I don't know if I'm phrasing this properly, but hopefully you get the idea of what I'm asking.

tl;dr do pros put more effort into their games than the average player, or is it just as easy for them?