We just need to keep moving! Didn't you have an injury? I think 3k is a good distance. I remember reading a public health report a couple of years ago saying the average person in London takes 30 minutes exercise a month! I had been nervous as I was reading the sentence as I wondered how it would end. At the time, I was walking about an hour a day, to and from work, and did another 2-3,000 steps through the day in the office.