Mind if I join you all? :)
I was a lifelong-unfit person until my early twenties, when I put some effort into learning to run, then stopped again, then started again, then stopped again (repeat a few times).
I'm currently sort of in moderate shape by my own standards -- I don't have to go back and re-do couch to 5k, but I went to the gym for the first time in over a month on Thursday, and I hadn't been going very regularly before that. I have a mud run in a couple of months so I'm going to try to get off my arse and start going to the gym 4x a week. Treadmill every time, arms strength training 1x a week, legs strength training 1x a week -- that's the plan. At some point I will really have to do some outside running but I'm not looking forward to it :(