Today was an optional running day according to the Hal Higdon 5K plan I'm following.  So, I thought I'd make an attempt on working on my form (as mentioned yesterday).  As I understand it, it's supposed to help me become a super efficient midfoot striker instead of the heel striker that I'm pretty certain I am.  Anywho, I tried doing as they said for the first 1 1/2 minutes, but it was wearing me out (and this at only 13:57 min/mile pace), so I decided I'd just do it for awhile in quarter mile intervals.  When the next quarter mile came along, I thought maybe I was getting the hang of it because it didn't tire me out so much and it even felt a little better than the norm, so I kept it up for most of the remainder of my short mile, but would get off track when trying to change channels on the TV.  I hope I'm doing this right.  It's supposed to take a few weeks before I get the hang of it and use it consistently; maybe it will make me a better runner.