Who am I?
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I'm Michael, a triathlon coach specializing in long-distance performance, based in Bourg-en-Bresse, between Lyon and Geneva. With over 20 years of experience in distance training, I have already helped more than 300 athletes reach the finish line of an Ironman—including age group winners and World Championship qualifiers.
I work daily with TrainingPeaks, proven protocols, and a scientific approach to training.
My goal: to help athletes progress faster and smarter, without wasting time or energy.
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Why ZoneX?
Because it is currently one of the most reliable methods for defining your training zones, particularly your SV1/VT1 and SV2/VT2, in a completely personalized way.
We're no longer talking about estimates based on approximate field tests: ZoneX measures your gas exchange in real time, which allows us to precisely identify the intensities at which your body switches from one energy system to another.
The result: personalized, verified zones that can be used immediately.
You stop “guessing.” You enter into ultra-targeted training.
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How does the device work?
The ZoneX test is carried out directly with me, on a home trainer or treadmill, depending on your goal.
The device analyzes your breathing via a lightweight mask and a connected sensor.
During the test, I supervise the entire process:
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I ensure that the equipment is properly calibrated,
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I analyze the data in real time,
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I adjust the intensity of the effort,
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and I explain what each change in breathing reveals about your physiology.
In less than an hour, you get a complete map of your metabolism.
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How do I integrate this data into your training?
Based on the ZoneX results, I redefine your cycling and running training zones, then integrate them directly into TrainingPeaks.
Your sessions become cleaner, easier to understand, and above all, more effective.
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You know exactly:
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when you are in real fundamental endurance,
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where to work on your tempo,
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how to structure your threshold or VO2 sessions,
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and how to optimize your effort management during races.
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What are the concrete benefits for you?
The athletes I have tested and monitored with ZoneX have observed:
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faster progress in aerobic endurance,
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better tolerance to volume,
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a reduction in “invisible” fatigue,
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better calibrated and better absorbed sessions,
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a huge gain in confidence in their training,
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and improving performance... while avoiding the “gray areas” that cause stagnation.​