MY FAMILY When it comes to holidays in France, bread. But this year, my plate is bare as everyone sits on croissants and baguettes. Before taking his first sip of coffee, he takes a long, slow breath through his sleek e-cigarette-like handheld device, holds it for 10 seconds, and then exhales through the mouthpiece. Instantly, an app on my phone provides the verdict as a score from 1 to 5. Today it is 1 and I am overjoyed. For the first time in weeks, I woke up in “fat burning mode.” I’ve taken the first step towards hacking my metabolism.
Usually, I roll my eyes first to gizmos related to weight loss and healthy eating. Or are you? A growing body of evidence suggests that one-size-fits-all nutritional advice doesn’t work for us, and everything we’ve thought about metabolism (the chemical reactions in cells that turn food into energy) is wrong. indicates that there is Against this background, a number of new technologies have hit the market, claiming to reveal how your metabolism is performing as you go about your day, and offer tips on how to improve it. With the right adjustments, it’s easier to manage your weight, prevent illness, improve your sleep, and more. I wanted to understand how much difference such a change would make, and whether ignoring new science could lead me to a metabolic meltdown.
Previous dietary advice was straightforward: …
