Why is sleep so essential? Can brain implants read and control our minds? How does our breathing influence how we think and feel? Is the brain more or less active during sleep? Is dopamine good for you and serotonin bad? How does your brain know that you want to move? How does our brain create a 3D world? Is this possible with just one eye? Can I train plasticity? Which brain region is the most important? Why do some people remember things better than other people?