Why do children become more aggressive off the field after playing sports?

Hi my names is nick and I'am a Doctor

Ok kids get mad is because if they are really good at one sport and they try onether and they don't do as well maybe is because the are not use to loosing and you might be the  at the game and the might get jeluis of you that youbare really good.

But if you want them to make them feel better you could tell the frien that feels bad and ask them if they can come to your party and say nice game to them
Your dear friend Nick by