The Balance 3 is the first sports watch built for HYROX, with dedicated race modes and…
Tag: Heart rate
Karvonen versus %Max HR: which HR zone method should you use?
%Max HR and Karvonen can put the same runner's Zone 2 several beats apart. The maths,…
Garmin ELEVATE 4.1 – two sensors going forward mean compromises on cheaper Garmins
The CIRQA uses Garmin's Gen 4.1 sensor with skin temperature added. Garmin chose it over the…
Garmin CIRQA Button and LED Guide: What Each Does
The CIRQA has one button and one multi-colour LED. This guide covers every button function and…
Garmin CIRQA Bicep Wear Confirmed: What It Means for Accuracy
The CIRQA supports upper arm wear as well as wrist wear, set per activity in Garmin…
CycleLytic: Terrain-Honest Cycling Analytics That Answers “Am I Getting Faster?”
CycleLytic sorts every ride by terrain, so "am I getting faster?" finally has an honest answer.…
Female VO2max on Garmin: Why the Number Lies and What to Do
Garmin VO2max estimates are built on algorithms trained predominantly on male data. For female runners the…
Hormones and Endurance Training: What Your Cycle Actually Does
Oestrogen and progesterone affect heart rate, fuel use, body temperature, HRV, and recovery scores across the…
Wrist HR Accuracy: Dark Skin and Small Wrists Explained
Optical heart rate monitors behave differently across skin tones and wrist sizes, but the research is…
Strava Relative Effort – Everything You Need to Know (2025 Update)
Strava Relative Effort (RE) is the core tool for quantifying cardiovascular training load. Learn about the…
Garmin, Coros Settle CardiacSense Patent War Over Smartwatch Heart Tech
A year-long, high-stakes patent dispute between wearable giants Garmin, Coros, and Israeli health-tech firm CardiacSense has…
new, undocumented Garmin Heart Rate Feature (now silently live, at least in beta)
new heart rate feature now silently live, at least in beta
Will Garmin release a competitor to Polar OH1 (Verity Sense) – How can OH1 be beaten?
We are overdue for something new in this space
Peloton Heart Rate Band
The big selling point is that the new band has LEDs that show your heart rate…
Polar M430 Review + Discount | Detailed | GPS & Optical Run Watch
Polar M430 Review – AÂ Detailed Look Polar have delivered a nice upgrade for runners and…
*Polar* *Optical* HR – Heart Rate on the wrist
Some exciting news today from Polar concerning one aspect of their future in the wareables/sport/activity market…
MIO Alpha 2 Review – Optical Heart Rate Monitor with Watch Display
MIO first came to more widespread prominence with their MIO Link optical wrist band. The Link…
adidas Adds Windows Phone Support for its Fit Smart Wrist Based Heart-Rate Coach (2014)
Actually some slightly old news shared here from adidas. I’ve been looking at optical HRMs and…
