Hello. I've never had an iPhone with an M processor. I'm wondering what they do, in terms of Health. Keep it in your pocket and it'll accurately track steps? Does it make running distances more accurate too? I'm considering using the new iPod touch as a replacement for my 4s. Will the M8 make tracking running distances more accurate than the 5th gen iPod touch? I had the 5th gen for a while but I wasn't happy with the inaccuracy for running distances. Thanks!