Best CGM for Athletes
A practical comparison of the Abbott and Dexcom sensors for training use, plus how to get the raw glucose stream out and align it with power and heart rate files.
Tag: wearables
11 posts
The Best Non-Prescription CGM Is the Dexcom G7, With Stelo as the Cheaper Compromise
A technical comparison of over-the-counter continuous glucose monitors in the US, including accuracy figures, data export paths, and how to analyze the resulting time series yourself.
What a CGM Costs, and What You Get for the Money
Current out-of-pocket prices for continuous glucose monitors, the cost per day of usable data, and what the data looks like when you export it yourself.
Over-the-Counter CGMs: What You Can Buy, What They Cost, and How Accurate They Are
A technical guide to prescription-free continuous glucose monitors in the US — Stelo, Lingo, Libre Rio — with real accuracy numbers, cost per month, interference modes, and how to get the raw data out.
How Accurate Is a CGM, and How to Measure It Yourself
What CGM error looks like in the data: interstitial lag, compression artifacts, sensor-to-sensor bias, and a protocol for measuring your own sensor's accuracy against fingersticks using the raw exports.
Is a continuous glucose monitor worth it if you're not diabetic?
What a CGM measures, which over-the-counter sensor to buy and how to export the raw data as CSV. Covers the metrics and failure modes that matter.
Using a CGM for Fitness: What the Data Can and Cannot Tell You
A practical guide to wearing a continuous glucose monitor around training: sensor placement, interstitial lag, exporting raw CSV data, the metrics worth computing, and the artifacts that will fool you.
What Wearing a CGM Is Like, and What the Data Is Worth
A practical account of continuous glucose monitor insertion, comfort, accuracy limits, and how to work with the exported data if you are not diabetic and want a metabolic baseline.
Glucose Monitors for Non-Diabetics: What You Can Learn and What You Can't
A practical guide to wearing a CGM without diabetes. Covers which sensors to buy, how accurate they are and what a normal glucose curve looks like.
CGM for Athletes: What the Data Can and Cannot Tell You
A practical guide to choosing a continuous glucose monitor as a non-diabetic athlete, getting the raw data out, and analyzing it without over-reading sensor noise.
Buying a CGM Without a Prescription, and Getting the Raw Data Out
Over-the-counter continuous glucose monitors are now sold directly to adults in the US. Which one to buy, what their accuracy numbers mean, how to export the data, and what to compute once you have it.