interval and core training

Started running at the gym, after about 15 minutes, a group was going to do some real bad core exercises..... Ok, a break, I really hate the treadmill, auw ! But after a work out, finished the treadmill at 11 km/hr. Maybe sunday can be the first time of a half marathon under 2.00...... ohohohoho what am I getting myself into? It really looks like my life is becoming a running story, and I think untill after april 10 th it's ok! Help help when you think I'm not of this world anymore and please say so, if you want to wake me up :) maybe one day I'll listen..  till then I'l be doing my exercise with my colleages