1.1K reactions · 26 comments | Lumen is the first device that accurately measures your metabolism through your breath, giving you real-time data you can act on. Forget the guesswork—Lumen shows you exactly how your diet, workouts, and recovery affect your metabolic flexibility, so you can optimize every step of your journey. | Lumen | Facebook

Since the first prototypes of Lumen began, our users have used Lumen's technology to measure metabolism *one million times!* To date, Lumen is being used in 126 countries. So we asked some of our users around the world to share how they're hacking their metabolism with Lumen! | Lumen