You have to understand in details what type of aggression is used by the rival. You should not come across in a trap and to believe that all aggression at a poker table is identical. Aggression can be expressed in very different forms. You can see how the player does many reyz or rereyz on a preflopa, and it is very easily possible to assume that this player – the maniac. "This player rereyzit many hands, I will just wait a strong hand and I will put against him oll-in". It is well, very important that you could come further and consider this opponent as the certain individual. How does he consider a game? As far as he is good? What skill level at it? Very often people get to a trap and consider that the opponent luzovo-aggressive. And actually this opponent just plays many hands on a preflopa, and here on a postflopa, when it comes to serious rates, it already plays according to the card. That is it does many open-reyz on a preflopa, but when it is ready to do large rates next, it always has a strong hand. So do not come across in such trap. Wonder whether the truth your opponent plays as the maniac, whether the truth he shows rash aggression and throws away counters? Or all not so, and it shows only the thought-over aggressive game? As far as he is a competent player? Make sure that you really consider the rival as identity, but not just you consider him the aggressive maniac who does not give in to control. Of course, he and the truth can be the real aggressive maniac who does not give in to control, and it will not be bad. But you should be convinced that it precisely indeed before you begin to expand really strongly the ranges against such opponent and to invest in distributions big money with non-standard hands.