Fasting methods like 16:8 assume your body runs on a clock. But fat burn doesn’t follow time. It follows your metabolism. And your metabolism? It changes daily. That’s why Lumen exists. With a single breath each morning, it tells you if you’re burning fat or carbs.
Your body doesn’t always follow the same rhythm. Lumen shows exactly when you’re in fat-burning mode and when that switch flips. So instead of following a generic window, you’ll time your meals to match your metabolism for fasting that actually works.
Go too far into a fast, and your body can start breaking down muscle for fuel. Lumen helps you spot that shift early, so you burn fat efficiently and stop before it backfires.
If you’re burning carbs first thing in the morning, it means yesterday’s fast didn’t get you into fat burn. Lumen shows you what went wrong — and what to adjust — so tomorrow you wake up burning fat and feeling more energized.
You can’t improve what you can’t measure. Lumen gives you instant feedback on how your body’s responding, so you can finally link your habits to real progress.
Some days your body needs a longer fast, other days a shorter one. Lumen adapts to where you are each day — and helps you adapt too.
Lumen tells you how many carbs your body can handle that day based on your current metabolic state. So you eat in a way that supports your goals, without food guilt.
The more your body can shift between burning fat and carbs, the easier it is to lose weight and keep it off. Lumen guides you with personalized recommendations and helps you build that metabolic flexibility over time.
No more feelings of dragging through your fast. Lumen helps you recognize when your body needs fuel, so you don’t end up wiped out, overdoing it, or breaking down muscle.
Lumen turns guesswork into insight. One breath shows how your metabolism’s actually working, so you can stop following blanket rules and start making choices that actually move the needle.
You take one breath into the Lumen device each morning. It analyzes the CO₂ levels in your breath to detect whether your body is burning fat or carbs — and gives you daily guidance on fasting, nutrition, and activity.
No more guessing. No more one-size-fits-all plans.
Just better decisions, based on your own body.