A-Game is your best possible play
This is the best game you can play, where your focus on the game is 100%. When you have harsh or experienced opponents, you put in you’re A-Game. To make long term profit with poker it is important, to play his A-Game so often as possible. If you feel by yourself that you are not able to play your A-Game today, it is better to leave the tables.
Especially when player are on tilt, they are not able to play their A-Game.