Just a quick question for you runners out there.....I have been training for a Half Marathon using a combination of itrains and outdoor running. I run about 4 times a week varying the workouts between sprints, hills, distance, etc. The question is..it seems that I am regressing and getting worse. I was doin great last week making strides (excuse the pun). BUT now the last 2 runs have been horrible! I can't even run 5 miles without stopping! It is like my legs are bricks. I need some advice. Please! I am getting very frustrated! I truly value the advice given on this forum and am a frequent lurker looking for advice and inspiration!