HI, I am a new rider, just bought a nice road bike last year. However, whenever I ride, my feet start to loose circulation and go numb. This happens if I wear good quality running shoes. I just bought a pair of cycling shoes and it seems to be worse instead of better. The only shoes that seem to help are my TEVA sandals which I can wear for about 40 minutes before this starts to happen. Does anyone one have any suggestions? I thought it was my shoes but now maybe it is a technique problem or a bike fitting problem?? Thanks