Introducing Lumen

Lumen is the first device to hack your metabolism. It shows what fuel you're burning, fats or carbs, and suggests the right nutrition & action steps to reach your goals.

Now with an exclusive offer for Fastic users only.

Personalize your fasting window

See fasting impact on metabolism

Lose weight long-term

"Lumen gives users a tailored daily recommended diet based on its analysis of their breath."

“The Lumen metabolism tracker is like having a nutritionist in your pocket.”

“It was refreshing to get straightforward information on how my body was working and reacting to the food I was ingesting.”

“I came away from Lumen impressed with it as a tool for figuring out what's actually going on with my metabolism.”

“I have a better grasp of how my eating habits impact my training and efforts to lose weight.”

“Lumen offers specific daily guidance for carb consumption and suggests food items, putting your fitness goals in closer reach.”

"Lumen gives users a tailored daily recommended diet based on its analysis of their breath."

“The Lumen metabolism tracker is like having a nutritionist in your pocket.”

“It was refreshing to get straightforward information on how my body was working and reacting to the food I was ingesting.”

“I came away from Lumen impressed with it as a tool for figuring out what's actually going on with my metabolism.”

“I have a better grasp of how my eating habits impact my training and efforts to lose weight.”

“Lumen offers specific daily guidance for carb consumption and suggests food items, putting your fitness goals in closer reach.”

"Lumen gives users a tailored daily recommended diet based on its analysis of their breath."

“The Lumen metabolism tracker is like having a nutritionist in your pocket.”

“It was refreshing to get straightforward information on how my body was working and reacting to the food I was ingesting.”

“I came away from Lumen impressed with it as a tool for figuring out what's actually going on with my metabolism.”

“I have a better grasp of how my eating habits impact my training and efforts to lose weight.”

“Lumen offers specific daily guidance for carb consumption and suggests food items, putting your fitness goals in closer reach.”

Lumen + Fastic

Personalize your Fastic journey by understanding the impact of your fast on your metabolism with Lumen.

Breath to unlock a healthier you.

Optimize your fasting windows and use fat as a fuel source without worrying about over-fasting or triggering a stress response.

Get feedback from your breath

With one breath understand what your body is using for fuel and what to do about it.

Personalize your nutrition

Know what to eat and when throughout the day and get actionable insights into your metabolism.

Optimize workouts

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.

Meet your health and fitness goals

Lumen helps you build a flexible metabolism which leads to improved fitness, nutrition and sleep.

From our community

Exclusive offer

Limited time only

For a limited time only, Fastic users can save an additional $50 on a lumen device.

Use code FASTIC at checkout.

Hack your metabolism today.