Okay so I have to humble myself here. I will admit that I have been a stickler for not walking on a run. It's important to me to run the whole way. But I found out this week that it is something I need to get over! It's still a run if I walk a little now and then.  Before my run I was looking through a Runner's World magazine and came across an article that was about how some guy set a new PR for his marathon by walking. I was like, "No way!" But it was for real. The article talked about running faster when you're running but taking some walk breaks early on to help the muscles have a little relief and rejuvenate.  I related it to hiking. I could be worn to a frazzle and stop for 1 minutes to rest and then have the energy to go just as many more miles on the trail. Just a little rest was all my weary legs needed. So I figured I would try this walking technique and see if it would work.    I took a few walk breaks on my 6.6 mile run. I found out that i...