This week’s question of the week comes from Carol Gsell who asks the following question: For those who have premium accounts in both, have you compared TP fitness & fatigue #s to those now offered in Strava Premium? Are they fairly similar or way off…? Just wondering if the (less expensive) Strava F&F are a decent proxy for TP. Thanks! What’s Similar The Training Peaks Performance Management Chart and the Strava Fitness & Freshness Calculation are based off the same research. The terms used by TP such as TSS, CTL, etc are proprietary, thus similar terms are called something different by TP and other training systems like RaceDay Apollo. What this means is, all factors being equal, a given workout will roughly equate to the same TSS/ Suffer Score/ Training Load. But, and there are a lot of buts, there are a lot of limitations to the way Strava calculates their chart that make it more of a novelty at this time than a serious training tool. Below we explain some of the drawbacks to the way Strava calculates. Link in bio.