Putting on the Heat
Putting on the heat means to pressure the other players by betting aggressively.
The simple explanation
A player who bets and raises a lot is putting on the heat. He forces the others to make hard decisions.
A closer look
Aggression can win pots even when your hand is not the best, because opponents fold. But it costs chips when the others call, so choose the moment: put on the heat when the opponents look weak, when the board favors you or when you have position. Do not turn up the heat against players who never fold.
A practical example
A player in position raises each street against a passive opponent, and the opponent finally folds.
Full explanation
Putting on the heat means to pressure the other players by betting aggressively.
Putting on the heat means betting aggressively to pressure others.
It forces opponents to make hard decisions.
It works best against weak, cautious players.
Do not do it against players who never fold.