Fourth Frontier X2 – Leading ECG Strap gets VO2max Feature Boost – Deep Dive

valuable features for premium subscribers.

Sleep Tracking Accuracy: A Comparison of Oura Ring Gen 3, Fitbit Sense 2, and Apple Watch Series 8

Oura Ring Gen 3 is the best performer in this study.

DDFA – new dynamic heart rate zone training – a Suunto first

Suunto's DDFA - A More simple explanation with examples

DDFA – Dynamical Detrended Fluctuation Analysis

DDFA - A More Complex explanation

Garmin Readiness compared to NNOXX Performance Readiness – A New Way to determine by pre-workout measurements

Measure Readiness rather than rely on TSB and HRV estimates

Alex Yee’s FTP and his Coros DURA Olympic Data

Are the FTP and zones shown in the article correct?

Cheapest caffeine tabs? plus a guide on the performance enhancing effects of caffeine on sports

Cheapest caffeine tablets for sporting use I love my coffee and highly rate my tins of…

Garmin – Training Readiness 100 Prime

If you feel awful...don't trust the tech!

Race Day Heat Adaptation – CORE Adaptation SCORE- no waffle

If you don't train in the heat for hot race day temperatures you will underperform, perhaps…

FLOWBIO Sweat and Hydration Sensor – First Thoughts

The base need for the product should be obvious to all endurance athletes.

my Garmin LOAD FOCUS is near perfect for once

I trust Load Focus more than some of the other Garmin metrics

Cycling: What’s My W’- how do I calculate it? and should I care?

W'bal is more useful at any given moment in the ride.

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