In today’s world, we increasingly live our lives late into the night. Whether it's work obligations, socializing, or being glued to a screen, we ignore the sun's rise and fall. But most of us are unaware that a clock is ticking away inside us. It uses light to keep time and tells us when to sleep and eat. Should we listen? Or is this biological clock simply a relic from a past time?In today’s episode, Jonathan speaks to a leading authority to unravel the latest science that reveals that this body clock, or circadian rhythm, has a dramatic impact on our health, weight, and mental wellbeing: Russell Foster is an Oxford University scientist who has dedicated his life to studying circadian rhythms. He’s a world leader in the field and the author of Lifetime: the new science of the body clock. Download our FREE guide — Top 10 Tips to Live Healthier: https://zoe.com/freeguide Timecodes:00:00 - Intro00:12 - Topic introduction01:23 - Quickfire questions02:30 - What is the biggest myth about our body clock that drives Russell crazy?03:19 - What are circadian rhythms?06:41 - Why do they matter to us?10:32 - How does your body sync its clock?14:07 - How does the circadian rhythm influence sleep?15:18 - What happens if we don’t live alongside our circadian rhythms?21:26 - What should night workers do?26:45 - Does your circadian rhythm change when going through menopause?29:42 -Is there a circadian rhythm for our gut?33:12 - Will it damage our long-term health to continuously be awake by our small children?35:15 - Summary36:14 - Goodbyes36:36 - OutroEpisode transcripts are available here.Get Russell’s book here.Follow Russell: https://twitter.com/oxscniFollow ZOE on Instagram: https://www.instagram.com/zoe/This podcast was produced by Fascinate Productions.