Exposure to electromagnetic field (EMF) emitted by mobile phones and devices with WIFI is on the rise and so is the EMF effects on sleep quality and well-being of individuals with high exposures to EMF. Some studies have shown poor sleep quality among individuals with long-term occupational exposure to EMF, and some have shown association between EMF long-term exposure and neuropsychiatric disorders including depression. This study aims to investigate a commercially available EMF- blocker blanket, called Sleepgift, that claims helping people to have a better sleep and improved health. We will investigate the Sleepgift efficacy on adults' quality of sleep and their vital signals as a measure of their well-being in a placebo-controlled single- blind cross-over designed study. Participants will sleep in our sleep lab at baseline and then 10 days later with the Sleepgift blanket after using it every night for the past 10 consecutive days. Participants will be given two blankets for each cycle of the study as it is a cross-over designed study: one Sleepgift and one regular blanket; they will not know which one is real or sham. There will be one-month washout period between the two cycles of the cross-over study. We aim to enroll 30 adults for the study. Participants' sleep quality will be measured by the established device called Prodogy; their vital signals will also be measured and monitored through the night. The collected data will be analyzed statistically for any significant effect of the Sleepgift blanket on sleep quality and vital signals such as heart's rhythm and heart rate variability.

Inclusion Criteria:

• 18 y\

When the study is finished, de-identified data could be shared publicly by other researchers.

After Aug. 2025

participants receive two similar blankets, while one of them is real and one is sham but they are blind to which one is which.