Hi I posted a few wks ago about starting c25k n my knees hurting so that I had to give up after the first run of wk 2. That was almost 3 wks ago, since then I have stuck to walking n done some stretching n strengthening exercises. Would love to give it a go again but my knees r still quite sore! OK when walking but they hurt when I go downstairs or kneel on them. Surely that's not normal after such a long rest! Shld I start again or wait until I'm completely pain free? Exercises like squats n lunges also hurt.