I suffer from pins and needles when running after 20 minutes which eventually makes my feet numb. I also have calf pain at the same time. Funny thing is i never had this problem with my old trainers but bought exactly the same make and now had these problems. Am going to rest up for 2 weeks then try running in my old trainers and see what happens. Failing that im gonna take my 2 sets of trainers down to the podiatrist and see what they say. Anyone else suffered the same thing?