Huarache Gal is right. I had to transition from Asics 1260's to Vibrams. Took a few months of not wearing the Asics for anything (I wasn't running at the time) and then slowly building up in the Vibrams. I started out running 1 mile in my vibrams 3x per week, wearing barefoot shoes outside of running as well. Then I moved up to 1.5, then 2 over a couple of weeks. Once you get those initial miles out and have no issues, you can build up faster. Zero drop would have the same transition period as the Vibrams, but Minimus are not zero drop. They have a 4 mm drop - which is why they caused me issues going from Vibrams to them. I had to send my Minimuses back. Burning in the peroneus brevus/longus area of the leg was not something I was willing to deal with long term. Decided to get some neoprene vibrams for winter... hopefully they're warm enough.