In this episode of Science Actually, Eva Bremnes discusses sleep and memory with our guest, Dr Giorgio Gilestro. Giorgio is a senior lecturer at Imperial and he is at the head of his research lab that focuses on the enigmatic functions of sleep. With a background in medical biotechnology, he outlines how genetics and the fruit fly helped us explore the mysteries of sleep, consciousness and the nervous system. In this episode, Giorgio tells us more about his research, and about how sleep and memory are linked. He also answers our main questions: do we need sleep? Is a good night’s sleep crucial to do well in exams? Check out our website (https://www.imperial.ac.uk/medicine/study/undergraduate/science-actually-podcast/), or follow us on Instagram (https://www.instagram.com/science_actually_podcast/) and Twitter (@ScienceAccPod)