A portable device that allows you to measure metabolism a few years ago seemed like science fiction and in fact this type of measurement was only possible in hospitals or by the best equipped dieticians.
Lumen is basically a mini respirator, you blow into it and it, by analyzing the amount of carbon dioxide you emit, can tell you if you are burning fat or carbohydrates and lots of other interesting information especially for those who follow special diets such as ketogenic.
In fact, in the ketogenic diet it should be possible to reduce carbohydrates to the point of burning fat and using those as fuel. In this case, therefore, the use of a device that in a breath (in the true sense of the word) allows you to know if you are doing well or need to adjust your diet could be really useful.
I'm honest, when I first read about Lumen in a magazine I thought it was the usual scam disguised as innovation and instead it seems to really work. If you are interested in learning more about the subject here you will find the link to the website of the manufacturer that sells it (it's not exactly cheap but I imagine it could be a good investment for personal trainers, gyms and so on)
Learn more about Lumen on its manufacturer's website
Do you know him? Have any of you tried it? Tell me in the comments!
