Complete the sentences with the correct form of the words given in brackets.
Events like city marathons are____(increase) popular. You dont have to be a_____(complete) person to take part in______(athlete), though you do need to be fairly___(energy) and____(reasonable) fit. You can build up fitness by jogging. It's not the distant that metters, but how long you jog for. You can improve your___(perform) gradually over a period of weeks. In ___(prepare) for a long race like a marathion it's____(necessary) to run more than______(phychology) aspects of running long races. Mental___(strong) is just as important as being____(physical) fit