Is it normal to have a really good tolerance without every drinking before?

I’m 17 and drank for the first time at a party yesterday, I had 6 shots of vodka three in succession one after another and I only got a little bit giggly and was fine an hour later while everyone else around me was goneee.

I’m 56kg and my body isn’t even good at handling colds or any kind of illness so I was surprised.

I’m not really sure how tolerance works but is this normal?

I basically felt completely sober for most of the party and was taking care of drunk people and hanging out w the people who actually didn’t drink anything.