Power is important than anything else in the Game Of Tennis. If you want to play good tennis, then power is very important. For good power, you should be equally fit too. There are many ways to increase your power on the field. When you start playing tennis and concentrate more on swinging the racket, at that time, you start swinging as hard as possible by putting great force on the racket. Continue doing this even though you get tired. Initially, you may get tired, but as soon as this becomes a daily routine, all your tiredness will be stopped and you will be able to sustain your energy till the last movement. This is what is called as power that helps you to maintain your energy till the last moment. With power and time, you will also move to playing aces and backhands without getting tired.