And it's not how everyone who plays games plays. But some do. I suspect there are many you don't see on the social media. It would be a strange field of human endeavor if it somehow managed to not have any people like this. I doubt they'd be the professionals. They wouldn't be the social media self-publicitors.

The professional ultra running scene isn't like what you think of when you think professional sports. There are certainly runners on the track and in road races that take the mindset you are describing, but ultra/trail running is very different from other pro sports.

That's been my experience too... I've known many triathletes who will do an extra lap around the parking lot to meet their coach's exact plans, but that seems a lot less common among trail runners.