A weighted blanket works primarily through the use of deep touch pressure, which is a gentle, distributed weight that mimics the feeling of being held or hugged. This pressure can trigger the release of serotonin, a neurotransmitter that helps regulate mood, and melatonin, a hormone that promotes sleep, while simultaneously reducing cortisol, a stress hormone. As a result, people often experience a calming and soothing effect, which can help improve sleep quality and mitigate anxiety or stress.