Yesterday for my last c25k run I treated (!!!?) myself to a run at Wandlebury, lovely woods but with a few inclines. Only running around 3.4 k in 30 minutes so next steps are to work on speed and run a 5k race in September.
Anyway I'm 40, had a baby 6 mths ago and am a size 22 (altho some how I have lost 50 lbs over the last year). My point is. .. If I can do it then anyone can.
as laura says: the pain and tiredness you feel when you are in the middle of it is nothing compared to the elation you feel when you have completed another step to the last week!