How does stress affect your brain? Which brain region is the most important? Is there a link between rheumatoid arthritis and anxiety? Why do Dutch people say “I have sawdust in my head” when they do something stupid? Why is sleep so essential? When are we able to solve MS? Is the brain more or less active during sleep? Did the gigantic dinosaurs also have gigantic brains and a gigantic number of neurons? What happens in the brain when you feel ‘confused’? Is dopamine good for you and serotonin bad?