sentence: To sum up , I believe that if you want to be mentally and physically fit , you should try to do some sport and exercise . Also , do not worry if you are not so good at it , just keep doing it and enjoy yourself .
modified: To sum up , I believe that if you want to be mentally and physically fit - try to do some sport and exercise . Also do not worry if you are not so good at it , just keep doing it and enjoy yourself .
transformation: PUNCT, OTHER, PUNCT