And this is why you should put your nerdy couch potato kid into baseball. First of all, it's not a very athletic sport, not like soccer or basketball where you have to run all the time. Baseball started out as a pastime for American inner city dudes who really kinda hated exercise. You *may* have to run once or twice during the game, but more often than not you just stand in place and mostly miss the ball.
However, your kids will get some very valuable lessons if they play on a baseball team. First, that oftentimes winning requires a team effort. As opposed to football or basketball, you can't win with only one decent player on your team -- no matter how good they are, they aren't going to be able to run that ball in from the outfield for a tag-out at home. Everyone will need to work with each-other for that out, even if they don't get along. Yeah, you may have spectacularly caught a fly in the center field, but now there's a runner advancing home from second and you're going to have to relay this ball via the kid playing shortstop -- yeah, the kid who shuts their eyes whenever the ball gets near them. But once they have the ball, the kid is solid, so you just need to gently lob the ball so it lands by their feet. You need to know and play to your team's strengths and weaknesses if you want to win.
However, there will always be times when the whole game is down to just you. It's the last inning and there's two outs and your winning runner is on third yelling "bring me home!" If you strike out or do a weak blooper that gets caught, the game is lost for everyone. The whole team depends on you to do well and do the right thing. So much weight and pressure. So much like real life. Yeah, some kids hate that, but it really does build that thick skin you will need to deal with failure as an adult -- your own, and your friends'.
So, fellow nerds, put your kids into baseball. Baseball is life.