I'm a huge believer in not running through an injury. That's why I've been off of running since Thursday. After my 4.5 miles on Thursday an annoying and persistant ache in my groin returned. I really have no clue what it is but it keeps coming back and if this 3 day break from activity doesnt make it go away I have to go see a doctor. Tomorrow is 20 weeks until Marathon day and supposed to be Day 1 of my formal training program. I can not afford a set back. Time off drives me crazy even though I know its better to let your body heal.