Doctors, nurses or shift workers often suffer from an irregular work schedule. They are more easily irritated, more tired and their normal sleep/wake rhythm is completely disrupted. In order to solve this problem, Toine Schoutens devised special light therapy glasses to support a healthy sleep-wake rhythm. Propeaq. His invention was viewed with scepticism for quite a while at first. But those days are far behind him, as Olympic athletes have been using Propeaq products since 2006 and their number is increasing. Meanwhile, the Tilburg company already supplies its glasses to fourteen countries so that athletes can start their competitions in peak condition and without any jet lag. Schoutens travelled to CES for the second year in a row to promote his glasses.