The first device to hack your metabolism. It starts with a breath.

Lumen is the world’s first hand-held, portable device to measure metabolism accurately. Once available to top athletes in hospitals and clinics, metabolic testing is available to everyone. The science isn’t new, but the technology is. Lumen uses a CO2 sensor and flow meter to determine the CO2 concentration in a single breath. This indicates the type of fuel your body is using to produce energy.  

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