This is a test of commonsense. Complete the next sentence:

How to increase mental strength
Read everything.
Recent studies show that people who enjoy reading novels are more easily able to empathize with others, a sign of a strong and well-rounded mind. If you want to work on increasing your mental strength, read a variety of things that you enjoy.
You don't have to jump straight into reading ulysses if you want to improve your mental strength, and in fact trying to read something too difficult might turn you off reading entirely. Instead, focus on reading things you enjoy.