The Shapa scale hides the numbers to help keep you on track. Here's what I learned. ROB TUTTON July 27, 2018 As anyone watching their weight can tell you, stepping on a scale isn’t always the best part of your day. You step on, hold your breath and hope for the best. It can be a source of anxiety, frustration, and even shame. As great as it can feel to see that number dropping, even a slight uptick can really mess with your head and derail your progress. And when that happens, it’s just so much easier to start subtracting workouts and adding snacks. But, as you may have heard, health is more than a number on a scale—and that’s the idea behind Shapa, a numberless scale that aims to remove the needless anxiety so you can concentrate on what matters. Shapa’s co-founder, Dan Ariely, is a professor of psychology and behavioral economics at Duke University who devoted his research to decoding people’s decision-making. With Shapa, he built on a principle known as loss aversion, wh...