Do we only use 10% of our brain? What causes Alzheimer’s disease? What is the ‘brain freeze’ sensation when eating or drinking something cold? Are emotions experienced in the heart or the brain? Why do brain tissues have different colours? Why do Dutch people say “I have sawdust in my head” when they do something stupid? Why is sleep so essential? How does personality arise? And does it change over the course of your life? Does a 14T MRI scanner make more noise than a 3T MRI scanner? Why are you grumpy after a bad night of sleep?