Source One: https://login.onu.ohionet.org/login?url=https://search.ebscohost.com/login.aspx?direct=true&db=psyh&AN=2024-40840-001&site=eds-live
Source Two: https://login.onu.ohionet.org/login?url=https://search.ebscohost.com/login.aspx?direct=true&db=f5h&AN=160866455&site=eds-live
Source Three: https://my.clevelandclinic.org/health/body/12148-sleep-basics
Source Four: https://www.cbsnews.com/news/best-sleeping-position/