MENTAL EXERCISE Calvin: “I’ve been thinking, Hobbes.” Hobbes: “On a weekend?” Calvin: “Well it wasn’t on purpose.” - Calvin and Hobbes In addition to improving creativity now, mental exercise is key to keeping the brain healthy for the later years of life. Studies show that simple mental exercises help ward off brain diseases such as Alzheimer’s and 1 dementia . Humor exercises the brain by challenging it in a fun and playful way. 1 See Using the Brain. 232