Light therapy glasses: risks and precautions
Eye risks, blue light, bipolar disorder, photosensitizing medications: precautions for light therapy glasses and when to seek medical advice.
Read the analysisGadgets & Tech
Wearables, CGM and sensors put to the test: what the measurements are really worth before you buy, without marketing jargon.
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Amazfit Helio Strap: review, accuracy and real cost
A source-based review of the Amazfit Helio Strap: heart rate, sleep, observed battery life, differences from the Pro and two-year cost, with no invented hands-on testing.
Ultrahuman Ring Pro: a desk-based review and its limitations
Ring Pro: verified French price, claimed and observed battery life, sleep evidence, optional costs and returns. A desk-based review, not a pretend hands-on test.
Glucose sensor: price, reliability and real-world usefulness
What does a continuous glucose sensor measure? Dated French pricing, accuracy limits, access and criteria for deciding whether to use one, with or without diabetes.
Garmin vs Polar: which watch to choose for sport
Running, cycling, triathlon or the gym: ecosystems, real-world accuracy, recovery and three-year cost to help you choose between Garmin and Polar.
Garmin vs Apple Watch: which watch should you choose?
Garmin or Apple Watch for sport, sleep and health? A comparison by use, battery life, phone and actual cost over two years.
