Lucid dreaming, sleep paralysis, REM, biphasic sleep, and dream interpretation. How somniferous!
Sleep Cycles: https://www.sleep.org/articles/what-happens-during-sleep/
Why Do We Need Sleep? https://www.sleepfoundation.org/articles/why-do-we-need-sleep
Biphasic Sleep: https://academic.oup.com/ahr/article-abstract/106/2/343/64370?redirectedFrom=fulltext
World's Most Relaxing Music: https://www.youtube.com/watch?v=UXgqDlrqmzo
Night School: Wake Up To The Power of Sleep: https://www.amazon.co.uk/gp/product/1447248406/ref=as_li_tf_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1447248406&linkCode=as2&tag=httpricharcom-21
Why Do We Dream? https://www.healthline.com/health/why-do-we-dream#why-do-we-have-nightmares
9 Common Dreams And What They Supposedly Mean: https://www.verywellmind.com/understanding-your-dreams-2795935
Dream Dictionary: https://www.psychologistworld.com/dreams/dictionary/
The Science Behind Sleep Paralysis: https://www.sciencedaily.com/releases/2012/07/120711131030.htm
What Is Sleep Paralysis? https://www.medicalnewstoday.com/articles/295039#what_is_sleep_paralysis
Koalas Sleep 17 Hours Per Day: https://www.livescience.com/27401-koalas-facts.html