My life has not changed at all. As in the last ten years, it is blessed by the stars and eschewed by the men. Be not afraid if time passes and there is no word from me, be not anxious by the tram-station nor blue when you're playing, because I have taken my destiny in my own hands. I have thought in light-years and I have suffered in seconds.
Metabolically speaking, Brazilians are not very tough drinkers. They can take more alcohol than the Italians or the French in most cases, but they're still quite far from the podium. This may be either the product or the cause, or both, behind the fact that their drinks are quite bad. The most popular Brazilian beer is Skoll, which is frankly crap. They do make some excellent Caipirinha, and their summer cocktails in general are awesome, but the more 'masculine' drinks are somewhat lacking in finesse. And so they're not among the greater drinkers, at least not physically.
What fucks you up about the Brazilians is that they're such unbridled party animals. The Oktoberfest is a pretty massive party in Europe, I think the biggest one we have if only because it goes on for a month with no interruptions, but the Carnival of Rio DWARVES the Oktoberfest easily. Brazilians will dance and shout and jump around so much that it's hard to keep up even if you're sober. In the hours of the night approaching morning, you're usually dead, even if you've had no more than a pint an hour. And I'm just talking about what happens in regular parties, not in Rio. I imagine Rio must kill you before midnight.
The technique adopted by the Brazilians is to wear you out with their samba and aerobics, so that your body can't keep up with what is usually a normal - even slow-going - drinking rate. The answer to this is to control yourself and not get taken into the general revelry, or at least hit some brakes when you feel your breath coming short. Even better, face them on your own grounds. Have the party at your place or at your own pubs. If they insist on playing you at some gig or festival, and the smarter ones will, ask to meet up a few hours before, just to get started, and spend those two hours drinking at a strong rate. This will hit the Brazilian much harder and give you a head-start.
Brazilian can surprise you when they're playing at home, but most of their risk factor can be neutralised at the outset if you know how to take them. They're a bit like the Tyrannosaur in Jurassic Park: they're pretty harmless if only you can stay still. So stay still.