Hi all, I'm hoping someone can advise me. I completed the first week of C25K on Monday. I really enjoyed it but I found that my knees really hurt after the 3rd run, and even now (Thursday) they don't feel 100%. I'm wondering if my trainers are to blame? I wear Skechers D'Lites, they are the trainers I used to wear to the gym. I don't want to spend a fortune on new trainers if either I don't need them or I can't continue if my knees don't improve. Any advice? TIA!