I attempted c25k before Christmas, got halfway through week 2, lost all motivation and ended up stopping. This week I've decided to start up again and just completed W1R2 tonight :). For the first time I actually really enjoyed doing it and was sad to have to turn around and come back home. Since running though I've been have pain in the arches of my feet and the backs of my calves when I move my feet. Is this normal? I didn't experience it the first time around. Do I just need to invest in some good running shoes or is it just down to running in a hilly area? Thanks :).