Bibliography

Article 1 : https://neurosciencenews.com/insomnia-cognitive-impairment-17089/

Article 2 : https://parade.com/1131566/julia-savacool/insomnia-causes-treatment/

Article 3 : https://edition.cnn.com/2020/10/27/health/insomnia-sleep-problems-pandemic- wellness/index.html

Article 4 : https://www.sleepfoundation.org/insomnia

Article 5 : https://www.nytimes.com/wirecutter/blog/old-socks-cured-my-insomnia/

Article 6 : https://www.sleepfoundation.org/restless-legs-syndrome  

Article 7 : https://edition.cnn.com/2021/03/02/health/smartphone-addiction-effects-on-sleep-wellness/index.html

Article 8 : https://androidcommunity.com/night-shift-may-not-have-effect-on-your-sleeping-habits-20210428/

Wikipedia : https://en.wikipedia.org/wiki/Insomnia