Idris has decided that he wants to run a marathon. He has been doing 10ks for a while and knows that he should start with a half marathon, but
his goal is to do a marathon next year. Which BEST explains how this is going to impact his training?
A. He needs to understand that only professional athletes run marathons.
B. He will have to gradually intensify his training between now and then
C. He should just keep his current running routine: he will get there eventually.
D. He should take on a lot of exercises that are not running to keep his body in balance.