I've not long started running and I've began to really enjoy it apart from my left knee becoming quite sore. I was using some Nike free run trainers that I bought a few years ago for the gym.
I decided to go to a proper running shop to get some trainers correctly fitted. It turns out I run with a significant over pronation and ended up buying some trainers to suit that. We watched a video of my ankles with normal trainers and the new ones and the difference was very obvious.
But I just don't like running in them as much so far, they make me more heavy footed. Do I need to just get used to them? I want to be light and flexible again. My knee is getting a bit better though.