A popular series by Hideki Katano: A set of two books: "Kyuyogaku" (The Science of Rest) and "Hirougaku for You Who Work Hard Every Day" (The Science of Fatigue for You Who Work Hard Every Day). These books are very easy to understand, covering the recently much-talked-about "mechanisms of fatigue" and "how to rest properly," and they were truly helpful to read (⁎ᵕᴗᵕ⁎) Both books are practical and recommended for those who: ・Get tired easily from overwork ・Don't recover even after sleeping ・Tend to be worn down by stress ❁⃘* "Kyuyogaku" (The Science of Rest) has no cover ❁⃘* No writing inside ❁⃘* In good condition for reading *Please understand that these are used items. Thank you for looking. #Kyuyogaku (The Science of Rest) #Hirougaku (The Science of Fatigue) #Hideki Katano #HealthBooks #FatigueMeasures #MentalCare #SelfImprovement #SelfCare #WorkFatigue #QualityOfRest