Why do some people get drunk more easily than others?

LaFemmeFatale_1

My friend is 172 cm and she gets drunk very easily, she falls down all the time, and I have to help her get up,

while i am just 16 0 cm and even though I also get drunk, no one notices that and of course I never fall down.

She’s bigger than me but she gets drunk easier why?

Why do some people get drunk more easily than others?
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