Six shots and I feel fine

I had six shots of Hennessy and I feel fine, not even tipsy. I’m not very tall nor very heavy (5’5, about 120 pounds). It might be because I took a lot of water and Liquid IV between shots and I somewhat spaced them out. I only had a little bit of food beforehand though. Any reasons why I feel fine? I’m also not a frequent drinker so my tolerance SHOULD be low. Btw I’m not trying to be drunk, I’m just looking for answers.