A few months back I nearly completed couch to 5k on the treadmill, and then when I tried to run outside I realised I could only do a few minutes without stopping. I was really upset because I doing 25mins easily on the treadmill and felt like I had achieved nothing because running outside was always my end goal and to complete a 5k. So typically my answer was to give up. Now I want to start it again but do it outside and im wondering if now is not the best time to start. Its dark when I wake up and dark when I finish work, and I live in the north of England so its pretty much freezing cold all the time!