For those who train with a power meter on their bike--and if you don't train with power, you should--doing a post-workout data analysis is almost as much fun as the ride itself. But if you don't know ...

Xert is a new software system that models fitness based on multiple parameters beyond the traditional single parameter of functional threshold power. Its potential for a higher level of individuality ...

Xert is a new software system that tracks and predicts in real-time how much power you can generate at any point during a ride. Last April I explored the concept of MPA in broad terms. After a year of ...