Hello Reader, Even the cleanest power file can hide what really happened in your session. Miss a lap press by two seconds, and your averages—and any Coach’s feedback—are off. Interval IQ™ fixes that. Our new machine‑learning engine scans every second of your ride and builds “virtual laps” for every meaningful effort, not just the best one. That means: True work‑bout averages for your 30/30s (or 4 × 10 min at CP) Hidden sprints and fatigue fades surfaced automatically Smarter compliance scores...

Hello Reader, I wanted to share a quick story and a new release I’m really proud of. Years ago, when Kyle Buckingham crossed the line first at Ironman South Africa, he reflected later and said to me: “Paul—I know you’re trained as a physiologist, but really, you’re more of a psychologist.” Kyle Buckingham: The Sweetest Victory at his Home Race – Ironman South Africa It made me smile. Andi Boecherer once told me almost exactly the same thing after winning Ironman Lanzarote. It took me back to...

The Catalyst —My 36-Hour Fasted Climb A few weeks ago I finished recording a podcast with Prof. Tim Noakes and Dr. Phil Maffetone—two mentors whose work underpins much of my own coaching. Inspired (and a little rattled) by their latest thinking on the importance (or lack thereof) of muscle glycogen, I tested my own beliefs in the subsequent days: Fed vs. 36 hours fasted (black coffee + water). 90-min climb up Mt Revelstoke. Result: Personal-best power with –13 % Athletica Workout Reserve. One...