I did it ... Wk2 R2 completed this lunch time. I feel brilliant except for the pins and neddles I experience in my left foot from about two thirds of the way through. I always thought lack of oxygen caused pins and needles but my breathing is fine whilst I'm running, I'm not particularly out of breath at the end of each run section (and for an Asthmatic that's saying something). My trainers aren't too tight either. Any advice?