Sleep, Stress, Caffeine and the Truth About High Performance with Phil Learney

You’re drinking more coffee. Taking more supplements. Sleeping longer when you can.Yet your energy still crashes. Your focus disappears. Your recovery feels slower. And your nervous system feels permanently switched on.In this episode of the Optimising Human Performance Podcast, human performance scientist Phil Learney unpacks why so many ambitious people feel exhausted despite investing heavily in their health, productivity, and performance.Phil explains how modern lifestyles create chronic nervous system overload, why recovery has become one of the biggest missing links in performance, and how sleep influences everything from cognitive function and metabolism to emotional regulation and resilience.The conversation also explores caffeine dependence, overstimulation, supplement quality, stress regulation, behavioural habits, and why sustainable performance starts with understanding capacity.If you want more energy, better recovery, clearer thinking, and performance that lasts, this episode delivers a practical framework for understanding what actually moves the needle.In This EpisodeWhy sleep remains one of the highest leverage performance tools availableHow chronic stress impacts energy, focus, and recoveryWhy many supplements fail to produce meaningful resultsThe relationship between caffeine and nervous system capacityHow overstimulation reduces long-term performanceWhy recovery influences cognitive and physical performanceThe role of routines, habits, and behavioural consistencyHow elite performance principles apply to everyday lifeWhy self-awareness changes how effectively you performKey TakeawaysRecovery determines long-term performance capacity.Sleep influences energy, cognition, emotional regulation, metabolism, and resilience.Nervous system overload impacts focus, recovery, and decision-making.Supplement quality, sourcing, and dosage matter.Caffeine affects people differently depending on stress load and recovery state.Consistent habits create more sustainable performance than short-term optimisation tactics.Self-awareness improves decision-making around stress, recovery, and workload management.About Phil LearneyPhil Learney is a globally recognised human performance expert, sports scientist, and educator with nearly three decades of experience across elite sport, corporate performance, and luxury hospitality.Phil is the co-founder of HMN24, a neuroscience-led human performance company focused on circadian biology and nervous system regulation, and the founder of the Future Wellness Group, an organisation dedicated to developing science-driven wellness solutions across education, performance environments, and global wellbeing initiatives.Through his work, Phil helps individuals and organisations unlock higher levels of cognitive, physical, and emotional performance using biologically intelligent strategies.Connect with Phil LearneyLinkedIn: Phil LearneyFuture Wellness Group: futurewellness.educationHMN24: hmn24.comChapters00:00 Why High Performers Feel Constantly Exhausted01:20 Phil Learney’s Journey into Human Performance03:51 The Truth About Supplements10:15 Why Most Supplements Don’t Work14:50 Dosage, Transparency & Ingredient Quality22:04 Caffeine, Stress & Nervous System Capacity28:04 Why Sleep Is Still Ignored32:56 Redefining High Performance37:35 Where to Find Phil38:53 Phil’s Final Message on Sleep39:35 Key Takeaways & Closing ThoughtsAbout the PodcastThe Optimising Human Performance Podcast explores evidence-based strategies to help people perform, recover, adapt, and thrive in high-pressure environments.For more episodes and resources: https://www.ophp.co.uk/If you enjoyed this episode, follow the podcast, leave a review, and share it with someone looking to improve their energy, recovery, and long-term performance.For guest suggestions, feedback, or partnerships: [email protected] and produced by Bess ManleyThanks for listening to Optimising Human Performance.This podcast is for people who can’t afford to fail. Each episode gives you practical, evidence‑based tools you can apply in the real world.For more about the podcast, speaking, coaching, and mentoring, visit:www.ophp.co.ukConnect with us:LinkedIn: https://www.linkedin.com/company/ophp/Instagram: @ophumanperformanceIf you found this episode useful, please share it with one colleague, subscribe, and leave a review – it helps us reach more people who operate in high‑stakes environments. Hosted on Acast. See acast.com/privacy for more information.