When I was around 15 I used to be able to read multiple chapters of books in one sitting (books like asoiaf, hp and hunger games) , the same also applies to fanfiction (specifically asoiaf fanfics) . I used to be able to read 100k words in 2-3 days depending on my free time. Now I’m 21 and just reading one chapter makes me tired and sleepy. Same thing also applies to video games asewll How can I work to get back at my old reading pace.