In this episode of Cognitive Edge, Dr Miah Hammond-Errey is joined by Jessica Spendlove, one of Australia's leading performance dietitians turned executive wellbeing coach. She has more than 25 seasons experience across professional sport, major corporates and the ADF School of Special Operations. Drawing on her clinical background and her own experiences with burnout and parenthood, Spendlove explains why what we eat, when we eat, and how we structure our days are among the most direct levers available to anyone seeking to sustain high cognitive output. The conversation cuts through the noise of fasting protocols and supplement trends to focus on what Spendlove calls the five rhythms, nutrition, sleep, exercise, stress and recovery, and connection. This podcast explores how these five pillars interact to shape not just physical performance but also focus, decision-making and resilience. She makes a practical case for being proactive rather than reactive with daily inputs, explains the bi-directional relationship between nutrition and sleep, and offers a clear-eyed view of where supplements like creatine and omega-3s fit. For anyone operating under sustained cognitive load, this episode is a grounding and actionable listen.