This blog post from Joe Friel provides convincing evidence on why it's important to have a strong core. The photos he posted of two people running on a treadmill shows the direct effects of a strong core vs. a weak core. Definitely worth a read.
Strengthening your core is something that all semi-serious runners know they have to do, but end up avoiding it for one reason or another. My experience is a pretty good example of why having a strong core is so important. If I'd taken the time to strengthen the muscles through my torso, I likely wouldn't be faced with the problems in my foot. All the wrong muscles were doing the work and the good muscles were paralyzed. Heck, even my diaphragm is doing the work of supporting my back instead of you know, breathing and stuff.
In other news, I went for my run last night. I set my Garmin pace alarm so I wouldn't go under 7 min/k. Boy, it was tough to run slow. I couldn't finish the 5K and had to walk once, but had no pain while running.
But, my foot is really hurting today. I'm pretty discouraged by the level of pain I have in my foot. I've unleashed the ice pack and am quietly working away on my exercises here at my desk.