The Diary Of A CEO with Steven Bartlett The Fitness Scientist: "Even A Little Alcohol Is Hurting Your Health!", "Late Night Screen Time Linked To Cancer!", "Working Shifts Kills You 15 Years Early!" - Kristen Holmes
1502 snips
Jan 4, 2024 
Kristen Holmes, Vice President of Performance Science at WHOOP, delves into the science of health and performance. She discusses the surprising impact of circadian rhythms on well-being, emphasizing how late-night screen time and alcohol disrupt restorative sleep. Kristen highlights the significant health risks for shift workers, suggesting lifestyle adjustments to mitigate these effects. She also explores the role of nutrition timing in improving sleep quality and shares insights on using heart rate variability to enhance overall health and resilience.
AI Snips
Chapters
Transcript
Episode notes
Circadian Rhythm Basics
- Circadian rhythm is a 24-hour cycle of physical, mental, and behavioral changes regulated by a "master clock" in the brain.
- This clock uses light and darkness as its primary signal, influencing every cell in the body.
Shift Work Definition
- Being awake between 10 p.m. and 4 a.m. for two hours, two days a week, for 25 days yearly, qualifies as shift work.
- This level of circadian disruption raises risks for numerous health issues, including cancer, metabolic dysfunction, and mental health issues.
Modernity vs. Ancestral Living
- Modern society allows for constant access to food and light, disrupting natural rhythms.
- Hunter-gatherer societies, without electricity, show consistent sleep-wake times, highlighting the impact of light-dark cycles.