" Exercise isn’t just good for every organ in your body. It’s good for your brain, too. It improves understanding, decision-making, and focusing. It assists with remembering and switching between tasks. It can also help people recover from mental illness. Some psychiatrists say that exercise is stronger than any medicine. "

― Barbara Oakley , Learning How to Learn: How to Succeed in School Without Spending All Your Time Studying; A Guide for Kids and Teens