Essentials: How to Exercise for Strength Gains & Hormone Optimization | Dr. Duncan French
Andrew Huberman
Sep 18, 2025
Episode description
In this Huberman Lab Essentials episode, my guest is Dr. Duncan French, PhD, the vice president of performance at the UFC Performance Institute and a world-class performance specialist.
We explain how resistance training and acute stress impact hormones and outline specific weight training protocols to increase testosterone to support strength and hypertrophy. We also discuss how to use cold and heat exposure to enhance recovery and performance. Finally, we explain how to match nutrition to training goals and improve metabolic flexibility.
Episode show notes: https://go.hubermanlab.com/VLuwKLs
Huberman Lab Essentials are short episodes focused on essential science and protocol takeaways from past full-length Huberman Lab episodes. Watch the full-length episode: https://youtu.be/iMvtHqLmEkI
Watch more Huberman Lab Essentials episodes: https://youtube.com/playlist?list=PLPNW_gerXa4OGNy1yE-W9IX-tPu-tJa7S
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*Timestamps*
00:00:00 Duncan French
00:00:20 Resistance Training & Hormones, Testosterone, Men vs Women
00:04:32 Increase Testosterone & Resistance Intensity, Tool: 6 x 10 Protocol
00:07:53 Rest Periods & Metabolic Stimulus
00:09:26 Weekly Training Sessions, Varied Intensity & Volume, Recovery
00:10:53 Short-Term Stress, Testosterone & Performance, Mindset
00:13:24 Deliberate Cold Exposure, Mindset & Recovery
00:15:33 Tool: Cold Periodization, Recovery & Goals
00:20:31 Sport, Skill Training & Quality Movement, Fatigue; Mental Fatigue
00:22:57 High-Intensity Training & Carbohydrates; Exogenous Ketones; Ketogenic Diet
00:26:10 Metabolic Efficiency, Carbohydrates & Fat Stores, Tool: Nutrition Periodization
00:29:23 Heat Adaptation, Sauna, Sweating
00:32:22 Training, Nutrition & Adaptations, Tool: 12 Week Program
00:34:15 Acknowledgements
Disclaimer & Disclosures: https://www.hubermanlab.com/disclaimer
Mindsip insights from this episode:
Utilize shorter rest periods to maximize muscle gains
An athlete using shorter rest periods, like two minutes versus three, will likely see greater muscle gains due to the increased metabolic stimulus.
Fuel high-intensity training with strategic carbohydrate timing
For high-intensity training, you can follow a low-carb diet but strategically fuel with carbohydrates immediately before, during, and after your workout to maximize performance.
Implement 14 sauna sessions over 8-10 weeks for heat adaptation
To effectively adapt your body to heat, it takes about 14 sauna exposures over 8-10 weeks, starting with 15-minute sessions and building up to 45 minutes.
Avoid ice baths to maximize muscle growth
Using cold exposure like an ice bath after training can dull the signaling pathways for hypertrophy, potentially short-circuiting your muscle growth progress.
Periodize cold exposure to enhance competition performance
Cold exposure is best used during a competition phase to maintain performance quality, not during a training phase when muscle adaptation is the primary goal.
Stop skill training at onset of fatigue
For learning a new skill, training sessions should be short and high-quality, and you should stop as soon as fatigue begins to impact the accuracy of your movement.
Implement six sets of ten reps at 80% one-rep max to boost testosterone
A workout of six sets of ten reps at 80% of your one-rep max with two-minute rests is highly effective for stimulating testosterone release.
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