ScienceGlobal issuesHow to sleep betterTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceGlobal issues10/22/2021October 22, 2021Most of the time, there are no physical causes for a sleep problem. Then it's called a primary sleep disorder. A number of daily measures can help here. Dr. Samia Little Elk gives tips.https://p.dw.com/p/4216yAdvertisement