For more information on the importance of sleep for college students, please visit:

https://www.scientificamerican.com/article/bring-science-home-high-frequency-hearing/https://health.gsu.edu/2015/12/01/the-effects-of-rest-on-college-students-are-you-getting-enough-sleep/

For more information on the limitations to which frequencies each age group can hear:

https://www.nidcd.nih.gov/health/statistics/age-which-hearing-loss-begins

https://decibelhearing.com/high-frequency-hearing-loss/

For more information on Sleep Inertia:

https://www.sleepstation.org.uk/articles/sleep-tips/best-alarm-clocks/