Hi, I started a similar program to couch25k about four weeks ago. I started with run 2mins walk 3mins x 3, moved onto run 3mins walk 2mins x 3 and have now stepped up to run 4mins walk 3mins x 3.
(By the way when I say run what I mean is a very slow jog - think fast walking! )
Thing is, since I stepped up to run 4mins my knees have been getting sore when running. The first time they were just sore to start with then it went off as I got into it but last night the ache stayed there a bit all the way round and I can still feel it a bit today when going up stairs etc.
What am I doing wrong? I'm walking for five minutes to warm up as suggested on the program website, should I be doing some stretching, if so how? Is it just my knees getting used to running after years of no exercise at all? Any thoughts welcome, I'm really really enjoying it and don't want to give up but don't want to damage my knees either!