Podcast:But Why: A Podcast for Curious Kids Published On: Fri Mar 02 2018 Description: Why do people need to sleep? How do we actually go to sleep? How does sleeping get rid of toxins in the brain? And how come when it's nighttime I don't want to go to sleep but when it's morning I don't want to wake up?! Those questions and more, all about sleep. We're joined by pediatric sleep psychologist Dr. Lisa Meltzer. Download our learning guides: PDF | Google Slide | Transcript