Self-monitoring: the truth about fitness apps10/08/2015October 8, 2015Lots of athletes enjoy using armbands and apps to monitor their performance. Our studio guest, sports scientist Claudius Kohdadad, takes a critical look at the pros and cons of this new trend.https://p.dw.com/p/1GhetAdvertisementSelf-monitoring: the truth about fitness appsTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video