I've started the c25k and I had completed week 5 runs before I had a very bad fall and injured my knee. I was so happy with my progress up to then. Since, I've lost my confidence after not running for a week. Then when I finally tried again I had an asthma attack... Really want to get back in to it because it made a real difference to my mood. Any advice would really be appreciated, I don't know whether to go back to week one or pick up from where I left off?