I'm new to road biking and ride a '08 Giant OCR3. My neighbor, who's retired and older than Jesus, told me he used to train on a fixed gear bike back in the 70's. I have an old road bike that I was thinking of converting to fixed gear to do some training on. A lot of the local hipsters ride around here on their neon colored fixed gear bikes with their trendy messenger bags but before I spend $300+ I'm just wandering if there's anything to this fixed gear craze other than that they look real cool. Has training on a fixed gear helped anyone out there?