Group 1 - The article discusses various types of anxiety related to sleep among young people, including "oversleep anxiety" and "sleep onset anxiety" [1] - It highlights that occasional insomnia does not significantly affect work performance for healthy individuals, as found by Professor Peter Drummond from Australia [3] - The article mentions popular quick-sleep methods, particularly the "American pilot quick sleep method," which reportedly helps 96% of trained military personnel improve insomnia, although effectiveness varies by individual [3] Group 2 - The phenomenon of feeling more tired after sleeping, referred to as "sleep drunkenness," is attributed to disruptions in the body's biological clock due to oversleeping [5][7] - The article explains that the brain remains active during sleep, performing essential functions such as memory consolidation and clearing metabolic waste, which is crucial for preventing neurodegenerative diseases [10][11] - Sleep paralysis, described as a feeling of being unable to move during sleep or awakening, affects approximately 7.6% of the population, with a higher prevalence in adolescents at about 6.77% [14]