Jonathan responds to your texts and tweets, is joined in studio for all the latest science stories for Newsround and speaks to one of our two guests featured on the show. Listen and subscribe to Futureproof with Johnathan McCrea on Apple Podcasts and Spotify. Download, listen and subscribe on the Newstalk App. You can also listen to Newstalk live on newstalk.com or on Alexa, by and asking: 'Alexa, play Newstalk'
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For years we have wondered what the purpose of sleep really is, and while huge strides have been made regarding our understanding of the function of sleep, much more remains to be uncovered. Joining Jonathan to chat through some of the theories we have on why we sleep and have dreams is Robert Stickgold, Professor of Psychiatry at the Center for Sleep and Cognition, Harvard Medical School.