In this age of reductionism, we oversimplify things. We have come to the conclusion that we can break poker down into related hands and analyse such isolated sequences. But we all know that a real poker match is not so cut and dry. In reality, most bluffing situations have an effect on each other, even if the situations are completely different. A 4-bet is directly related to whether someone has just lost a huge all-in.
It's all about emotional dynamics - how emotions and the perception of emotions affect the tactics of the game. The perception of emotions is as important as the emotions themselves.
For example, let's say you got married today, so you can't be angry if you lose at poker - you're in too high a mood. You lost a big pot. The fact that you don't feel angry doesn't mean you don't have to adapt to the situation - your opponent expects you to be angry, so you have to respond to his expectations. Your opponent on the next hand thinks you're going to be knocked off your feet. Emotional dynamics are as much about the perception of emotions and stereotypes as they are about reality.
As human beings, we are very sensitive to distractions and the flow of emotions. So the best way to understand what's happening at the table, even at the highest levels of the game, is to decipher the emotional dynamics at play in poker.
We cannot talk about emotions without first mentioning tilt. However, tilt is a very broad topic in poker in general, so we will now discuss a small part of it - other players' tilt. Tilting can be defined as allowing negative emotions to affect the game. In short, you will see that tilt can be triggered by five main reasons: a lost pot, a failed game manoeuvre, an insult or disrespect received, a disturbed state of mind (fatigue, hunger, hangover), and life events (loss of a job, a bad day). These are obvious causes that you will have encountered if you have any experience at a poker table. However, there are a few more aspects of the tilt that are worth exploring.
Tilting can be likened to a pot of boiling water. There is an emotional threshold that the player can still handle and maintain inner calm, but as soon as the pot gets hot enough, the water in it starts to bubble. As soon as it gets close to boiling, there is a visible reaction - the harder you push your opponent to 
"boiling point", the more tumultuous it plays. That's how tilt works. Each opponent will be able to withstand a certain number of beats before he reaches the tilt threshold and starts to behave accordingly. The further you push him beyond this threshold, the stronger he will react. However, not all players tilt in the same way.
There are many ways to tilt, but there are two common ones: hot tilt and cold tilt. The hot tilt is more familiar when the player gives in to anger. He will be desperate to fight back, so he will play more aggressively, make more calls, and the game will be a little crazy. The main feature of hot tilt is the preflop open shove. Of course, nowadays at higher limits, you rarely see an open shove.
The second type of tilt is cold. Cold tilt is more passive, more yielding. This player will start to play more passively, make fewer moves in pots, fold more often against big bets, and act as if he is incapable of fighting for pots. You will notice that the player has suffered a cold tilt when he starts to play poorly, looking like he has no cards in the deck, feeling helpless. He will feel that all his actions are being crushed, but he will not feel that he has been completely defeated and will not be convinced that he should leave the table already. The aggression of such an opponent will be completely subdued and the sophisticated actions will have disappeared, and you can say that you are only playing with the "skeletons" of his game. When the hot tilt tries to take control of the situation and demonstrate his power to get back into the game, the cold tilt will wait for the good cards to fall.
As mentioned above, not all players tilt the same way, and you should react differently to each opponent and the way they tilt. Against someone who is experiencing a cold tilt, aggression will be the key to the game. As soon as the opponent lays down all his weapons, you should pull out your full arsenal and grab every dollar he is not fighting for. Against a player who is tilt-hot, it is enough to play solidly and simply adapt to his wider postflop ranges by responding more often. Also add more heavy aggression to attack the opponent's range, which is too wide and too tight. Simply playing a reasonable, hotly tilt-playing player will make good use of him, the key is not to give in to his aggression.
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