But what do the sleep experts say?
[...]
“There does seem to be some evidence that perhaps [these devices] can pick up signals we haven’t been able to see previously, and I do think they’re becoming more and more capable,” said Greta Raglan, a clinical associate professor of psychiatry at the University of Michigan Medical School and faculty member at the Michigan Medicine Sleep Disorders Center. “That being said, I don’t think there’s a whole lot of evidence to back up the shifting in tones and things like that to improve sleep quality.”
[...]
Very few things have proved to make someone sleep better despite themselves, Zeitzer said. But he and Raglan agree that because sleep is inherently a psychological phenomenon, thinking that something will help may mean it actually will. Both say devices such as these are worth trying, but if they really do help, it’s “generally because of a person’s belief.”
[...]
Before you even consider spending your hard-earned money on some new sleep gadgets, Raglan added, be sure to try one thing first.
“If you are in bed and you’re not asleep, and you’re struggling or you’re feeling anxious, the best thing you can do for yourself is to get out of bed, and do something quiet, calm and comfortable in low light until you start to feel sleepy again,” she said. “Our motto is that beds are for sleep and sex, and nothing else.”
[...]