Today I can run a mile in about 6 minutes , which in the grand scheme of athletic things is n't all that fast , but compared to the sloth - like pace back in 6th grade I ' ve come a long ways . And in my perpetually dissatisfied view of my athletic self I still yet have a ways to go . Let 's make this clear though - everybody has a limit .
According to the above context, answer the following question.
What will most likely happen as the writer continues to run ?


They will be able to run for longer periods .