Sleep coaches usually charge from $75 to $150 per hour—and their services aren’t covered by insurance, reports Consumer Reports.

But Shalini Paruthi, M.D., director of the Pediatric Sleep and Research Center at St. Louis University and a spokeswoman for the American Academy of Sleep Medicine, says, “There’s little evidence that people who hire these coaches actually sleep better.” A recent review in the Journal of Pediatrics found that less than half of self-proclaimed sleep coaches had prior experience in health care or education. The study also pointed out that the coaches are not required to be licensed or to have any specific certification.