Well, I had a blood test done and have been diagnosed with Hypo-thyroidism. Which means my Thyroid is underperforming. I was told I will need to be on medication from here on. I am hoping this is the source of my problem related to running. I was told this is a somewhat common problem and very easy to treat. My best running friend has this also and says it is no big deal… no side effects from the meds. I just hope it is the answer to this issue. Do any of you know anything about this. If I were not a runner this would not have been discovered until it progressed further because no other area of my life has felt any effect on it. It is amazing how just being a little off in running is so noticeable. I was beginning to think it was in my head because there was no clear answer. I hope this is it.