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The first device to hack your metabolism

Enhance fat burn, lose weight & boost energy naturally

It starts with a breath

Lumen is the world’s first hand-held, portable device to accurately measure metabolism. Once available only to top athletes, in hospitals and clinics, metabolic testing is now available to everyone.

Lumen Device and a phone

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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Trusted by Drs, Athletes & Fitness Pros

Lumen device

The Gold standard of personal metabolism tracking

Lumen is scientifically proven to meet the gold standard of metabolism measurement (RER) in multiple validation studies.

Track your
metabolism daily

See how your metabolism is affected by your sleep, physical activity, and nutrition.

Customize your nutrition

Get daily personalized meal plans. Know exactly what to eat and when.

Workout optimization

See if you have enough energy before a workout or if you need to fuel up. Breathe afterwards to see the impact on your body.

Monitor and improve your metabolic health

Lumen tracks your metabolism, sleep, nutrition, and fitness data to provide a Lumen Flex Score, which reflects your success and helps sustain results.

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Take control of your metabolism

Many of the factors that impact your metabolism are within your control and can be changed to improve your body’s metabolic flexibility, which is your metabolism’s ability to efficiently switch between using carbs or fats as a source of energy.

Each morning, you’ll breathe into Lumen to see the source of your body’s energy: fats or carbs.

A man breathes into a Lumen device and holds a cell phone in his hand

Based on this metabolic data, Lumen will provide a daily personalized nutrition plan, as well as other actionable insights on your sleep, workouts, and meal timing. Lumen tracks your sleep, nutrition and exercise in order to provide you with a score that reflects how healthy your metabolism is.

Over time, Lumen trains your metabolism to use the food you eat more efficiently.

2 women in sportswear looking at cell phone

When your metabolism is more flexible, you are better able to burn fat instead of carbs, leading to weight loss. By focusing on metabolism instead of restrictive or unsustainable diets, Lumen helps you lose weight and keep it off for good with daily feedback.

Adidas Runners Logo.
Faster Than Before

Lumen partnered with Adidas Runners to improve runners metabolism and enhance performance.

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Adidas Runners Team
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Stay a breath ahead.
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