Week 5, Day 1

So, I did Week 5 Day 1 on Sunday on my parent's treadmill.  I was super hopeful that my back wouldn't hurt due to the extreme bouncy nature of this treadmill (it's like you have springs in your shoes!  It's awesome) but alas, I still had the back pain.  I was able to finish the whole program - but I am seriously concerned at this point.  So, I'm going to back off the running a bit I think - just 3 days a week, including weekends, and work the heck out of my back and my core.  I looked up the back issue thing on runner blogs and they mentioned muscle fatigue as a possible source and it def sounds like a possibility.  I went to the running store and had my gait analyzed and I'm actually wearing the right kind of shoes - go figure!  So it's got to be the muscle thing. I hope it's the muscle thing and that I can fix it, otherwise this 10k is going to hurt way more than I thought...