21.   So he created the Middle School Peace Institute, teaching students to use their brains instead of brawn to solve conflicts, and to take action against violence.

22.   She was an adventuress who outwitted most of the adults, using her brain to get out of a tight spot.

23.   The brain is used to functioning with the nicotine and making the body feel good from it, so it wants the nicotine.

24.   The next step, which is under way, is to see how children and adults with reading disorders use their brains.

25.   These are people who are used to using their brains to solve complex problems.

26.   This was the first clear evidence that men and women can use their brains differently while they are thinking.

27.   To their surprise, the researchers discovered that the sexes used their brains differently.

28.   Today, they primarily use their brains.

29.   Use your brain.

30.   Use your brains.