Why do we sleep, how much does it matter, how much sleep do we really need, to what extent do lifestyle factors like coffee, alcohol and technology affect our ability to sleep? Today we’re talking to Matthew Walker, the award winning author of bestseller ‘Why We Sleep’ about sleep, getting to grips with our sleep cycles, the connection between sleep and our mental and physical health, how to sleep better and why we need to make it a priority. See acast.com/privacy for privacy and opt-out information.Learn more about your ad choices. Visit podcastchoices.com/adchoices