Why is sleep so essential? How are memories made in the brain? How does stress affect your brain? Is there a link between rheumatoid arthritis and anxiety? When are we able to solve MS? Are emotions experienced in the heart or the brain? How does personality arise? And does it change over the course of your life? What is the purpose of brain research? Do we only use 10% of our brain? Is it true that you can be ‘left-brained’ or ‘right-brained’?