Creating and keeping a good poker face is an important part of the game. You are sitting at a card table and you have been dealt a fantastic hand; you accidentally reveal this by smiling or grinning not realized your are physically smiling. The other players will immediately know the kind of cards you’ve got, and will most likely fold.

On the other hand, if you’re dealt a bad hand and you look upset, other player will know that you’ve been dealt poor cards and start raising the bets for that reason. Keeping a neutral expression on your face throughout the game of poker involves a long and hard internal struggle. If you let your true feelings slip, even for a second, you can be guaranteed that the other players will notice.
You can train your face to hide your true emotions and once you accomplish this you can start to have some fun and misguide the other players. You can do this by making expressions that are actually the opposite of how you are really feeling. For instance, if you get dealt a spectacular hand, and you want to convince the other players otherwise and so get them to carry on playing. Keeping that poker face will keep others from knowing what hand you hold.