Tossing and turning, racing thoughts of revision and exams... most of us know what it feels like to struggle with our sleep when we're preparing for a big challenge. And it can be tempting to sacrifice sleep when we're under time pressure, even though we know it's good for us. It's a real catch 22. This week, we sit down with Professor Russell Foster from the University of Oxford. He's been studying sleep for decades, so together we dig into what's happening in our brains when we sleep, why it's so important for our health and wellbeing, and how we can prioritise our sleep to help us cope with stress. This is On Your Marks. Because you’ll never know until you try. Hit follow now so you never miss an episode, and let us know what you think by leaving a rating or review. For more information about ACCA exams, you can go to www. accaglobal.com/exams To watch the video version of this podcast, head to www.accaglobal.com/onyourmarks On Your Marks is a Fresh Air Production for ACCA. The Executive Producer is Annie Day, the Senior Producer is Eva Higginbotham, with support from Sarah Moore. The videographer is Yohan Forbes. The Sound Engineer is Basil Oxtoby. See omnystudio.com/listener for privacy information.