Bibliography

 Medline Plus:

https://medlineplus.gov/spanish/healthysleep.html

Mayo Clinic:

https://www.mayoclinic.org/es-es/healthy-lifestyle/adult-health/in-depth/five-ways-sleep-soundly/art-20267152

American cancer society:

https://www.cancer.org/es/noticias-recientes/10-consejos-para-dormir-mas.html

Medical news today:

https://www.medicalnewstoday.com/articles/325353#stronger-immune-system

Sleep fundation:

https://www.sleepfoundation.org/how-sleep-works/why-do-we-need-sleep