Funny, I did the same thing. I was so thrilled with all the hype surrounding barefoot running that I did 7 barefoot miles (on pavement) the very afternoon I pur

Funny, I did the same thing. I was so thrilled with all the hype surrounding barefoot running that I did 7 barefoot miles (on pavement) the very afternoon I purchased my FiveFingers. Holy fuck that was a bad idea. Bear in mind I am a semi-serious runner who has no problem doing a long, slow 13-15 on any given day. I haven't had significant soreness from running since I started, back in high school. Well. That was before I ran for an hour on my tippy toes. I was partially disabled for a week. Same thing--calves felt like they got hit with a hand grenade, ligaments FUBARed, also some gnarly blisters on the soles of my feet (turns out asphalt is hot in the summer). In spite of this I definitely could see why it's better for you; heel striking is just not an option and you sort of prance instead of planting. OTOH I am among the lucky 20% who have never had a running injury because I tend to tread pretty lightly anyways. I think it's still possible to have a healthy stride in shoes, but going barefoot forces the issue: everything else hurts like a bitch. I have yet to try the anti-shoes out again. The buzz continues to crescendo so I probably will, but let this serve as a warning if you're thinking about trying it out: start slow on these, now matter how much of a badass you think you are.