Tried to do C5K last year kept repeating weeks and only got to week 3 after about 4 months, gave up due to illness.
Now this morning I completed Week 5 run 3 and I am so happy, I have repeated runs until I felt ready to move on, but finally bit the bullet and completed the 20 minute run this morning.
I go out at 5.10 in the morning originally because I didnt want people to see me huffing and puffing along, but I have found that this works for me, I cant run after work as I have no energy and why change it.
Started this at 223lbs on 25th July this year now 201lbs, silly me didnt take any measurements when I first started but did so 4 weeks ago and in those 4 weeks I have lost a total of 8.5 inches (0.5 arm, 2 inches from chest, waist, hips and thigh).
As you can see I still have quite a lot of weight to loose as I am only 5'1" and 51 years of age, my message to people lurking and I am a lurker, is go for it, if you feel you need to repeat runs do it, I know the programme is designed for natural progression but if you dont feel ready repeat a run but not too often as the feeling when you complete a toughie is fantastic, and everyones toughie is different.
Just had to shout from the rooftops that yeah I ran for 20 minutes this morning.