BusinessOptimized: An experiment in self-improvementTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoBusinessMiltiades Schmidt03/20/2018March 20, 2018How many kilometers have you walked today? How many calories have you burned? Wear a fitness tracker and you’ll have your answer. But are you putting yourself under unnecessary pressure? Our reporter gives it a go. https://p.dw.com/p/2udt6Advertisement