Sleep is more important to people than ever - but the number of people complaining of insomnia is increasing year after year.
From this a huge market has developed, wearables, sleep apps and other electronic devices are supposed to help monitor and optimize our sleep.
The sleep doctor Geert Mayser takes a critical view of this: “With most devices, you only measure movement activity, for example on the wrist,” explains Mayser.
“But you don't measure sleep yourself”.
Those affected often believed the evaluations of their sleep apps and fitness bracelets and got involved if the result was unfavorable.
The physiologist Jonathan Peake from the Queensland University of Technology in Brisbane shows in the journal “Frontiers in Physiology” what causes technical sleep aids to fail.