The limbic system generally makes most of our decisions for us :-)
https://www.gorod.lv/novosti/161161-issledovanie-pokazalo-pochemu-vyigrav-sorevnovanie-chelovek-vskidyvaet-ruki
It is often observed that in a state of ecstatic joy (for example, after receiving a prize or taking first place in a competition), a person throws their arms up. Scientists decided to find out where this gesture originated and how it became part of the human repertoire.