[250] - Radio 3AW - Australia Overnight - Special Guest Dr OIivia Walch - 15-05-2025

Text me what you thought of the show 😊 When was the last time you experienced real darkness—so dark you couldn’t see your hand in front of your face? According to mathematician and sleep expert Dr. Olivia Walch, our modern “light diet” may be silently sabotaging our sleep. In this eye-opening episode, Dr. Walch breaks down the surprising science behind circadian rhythms and why obsessing over “8 hours a night” misses the point. Instead, she emphasizes the importance of sleep timing, consist...