I started the C25k at week 3 because I have some running experience and want to improve my stamina. After my run today I felt like I hadn’t been pushed enough / I could have done it again - does this mean it’s too easy for me? I didn’t really feel like I had been out long enough. I don’t have the stamina to keep going and before Christmas if I went by myself I jog/ run until I need a break then walk for a minute and then start again - should I keep going with week 3? I feel confused and hope someone knows how to advise me!! Thanks!