What is 3 bet poker?

[webgamb]

In a poker game, folding blinds are considered the first move. Therefore, this strategy works on a second raise pre-flop. Interestingly, there are two types of 3 bet poker:
1.pre-flop, and
2.post-flop 3-bets.
However, since the pre-flop strategy is the most common and people majorly agree with this strategy, we are also going to refer to pre-flop.