I have been training for about a year now,really training not just messing about. I've got to a point where I don't seem to be getting any better. my last 1.5 miler was 7:34 down from 7:40 so it is still going down but very slowly. Is it just because im getting to my peak would you say or maybe I need something new? I do 4 sessions a week 2 hiit 2. 2 hour slow base runs. Press ups and sit ups every run day, One strength training session a week. Maybe I need to do more?