Sound Sleep: https://alfredlo.wixsite.com/sleep
Jonny Benjamin's Youtube video: https://www.youtube.com/watch?v=dodxKSrbySg
Rainstorm sounds video: https://www.youtube.com/watch?v=yIQd2Ya0Ziw
Healthline: https://www.healthline.com/nutrition/17-tips-to-sleep-better
Article- Sleep problems in university students: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5536318/
Article - The extraordinary importance of sleep: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6281147/
American Cancer Association: https://www.cancer.org/latest-news/how-to-get-more-sleep.html
NHS: https://www.nhs.uk/conditions/insomnia/
Casper Sleep Channel: https://www.youtube.com/watch?v=7p0B2MD11QI
https://www.youtube.com/watch?v=YxWghS1QUv0
https://www.youtube.com/watch?v=nmejxzyNhJ0&t=3s
https://www.youtube.com/watch?v=X37fpt3hXJE
University of Michigan: https://sph.umich.edu/pursuit/2020posts/why-sleep-is-so-important-to-your-health.html
WebMD: https://www.webmd.com/sleep-disorders/benefits-sleep-more