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By the way, I've been wearing Vibrams for two years (long walks, around the house, etc).[/QUOTE]
I became interested in BF/minimalist running after I trained and completed my first 10 mile run last March. I started running about a year prior to that. I don't consider myself any sort of serious runner, I just wanted another type of exercise to keep myself active. I developed a menacing case of PF. So I bought a pair of VFFs and read all the information on BF running I could find. I started slow, and immediately had calf issues. I posted on a BF running forum and several members helped me figure out my issues. I started over completely BF. I began to realize my form/gait really changes when I wear VFFs compared to BF. I went to a BF running seminar hosted by Dr. Irene Davis, and ran with Barefoot Kenbob. He ran behind me and told me exactly what my problem was, and with LOTS of practice my form improved. I also learned to listen to my calves and didn't leave the house without my "stick" and foam roller. I also purchased a pair of Zems. For whatever reason, my form doesn't seem to suffer as much in Zems compared to VFFs. I go BF as much as possible even when I'm not running. Like the previous poster, be sure to listen to your calves and be careful increasing your mileage too soon. I've learned ALOT from several BF forums and from posts by Jason Robillard. As a matter of fact he just published a book on barefoot running. He's giving away free PDF downloads. If you google him, you're likely to find it.Somedays I run BF, other days I run in minimal shoes, somedays it's on chip and seal, other days it's on trails. I don't know if tossing my asics help rid my PF, or if it was a combo of many different things, but so far this is working out for me. But again... I'm not a serious runner. I'm slow and don't care too much about my miles, just having fun.