How to Exercise for Strength Gains & Hormone Optimization | Dr. Duncan French

A protocol of 6 sets of 10 repetitions per exercise, at approximately 80% of your one-repetition maximum (1RM), with 2 minutes of rest between sets, is highly effective. The key is to maintain intensity and ensure you complete all 10 repetitions, lowering the weight if necessary to do so. This approach creates significant metabolic and mechanical stress, optimizing testosterone output and hypertrophy.

Shorter rest periods, like 2 minutes, are generally more advantageous for muscle hypertrophy because they maintain a higher metabolic stimulus. Longer rest periods allow the body to flush waste products and reduce the metabolic environment, which can diminish the anabolic gains. It's important to balance rest to create the desired training stimulus.

Yes, short-term, acute stress can be beneficial. Studies on parachute jumpers and challenging resistance training protocols show that arousal linked to stressors (like epinephrine and norepinephrine release) can increase testosterone and sustain force output, enhancing physical performance. This response, however, is distinct from chronic, prolonged stress.

Cold exposure should be strategically periodized. It's most beneficial during competition phases to manage inflammation and maintain quality of skill and technical execution. However, immediately after hypertrophy-focused training, cold exposure can dampen the mTOR pathway and essential hypertrophic signaling, potentially short-circuiting muscle growth. It should be avoided when maximizing muscle adaptation is the goal.

Skill development is driven by quality over quantity. Shorter training sessions focused on repeated, accurate movement rehearsal are key. As soon as fatigue impacts the accuracy of movement, it's time to stop the skill practice. Conscious mental engagement throughout the learning process is also crucial, making skill sessions mentally fatiguing.

Adopting a 'needs-based eating' approach is recommended. This involves consciously understanding your physical exertion and flexing your diet accordingly. During periods of high-intensity training, increased carbohydrate intake is necessary for fueling and recovery. For lower intensity work or less active days, a reduced carbohydrate or more ketogenic approach can enhance metabolic efficiency by training the body to preferentially use fats.

Metabolic efficiency is the body's ability to preferentially utilize different fuel sources (fats or carbohydrates) based on exercise intensity. Training the body to use fats more readily at lower intensities preserves carbohydrate stores for high-intensity efforts. This prevents premature fatigue and ensures optimal fuel availability when exercise demands are highest, critical for sports like MMA.

For most physiological adaptations in response to a training or overload stimulus, a 12-week period is generally adequate to observe progression or regression and understand if the approach is right for you. While some elite athletes use shorter, super-condensed blocks (e.g., 3 weeks) due to competition schedules, a 12-week timeframe allows for coherent, structured adaptation.

Yes, the body is highly adaptable to heat. Heat acclimation strategies, such as regular sauna exposure, can increase sweat rates and improve tolerance to heat. Combat athletes use this to efficiently manage weight cuts. Starting with 15 minutes of sauna exposure (around 200°F) and gradually increasing to 30-45 minutes continuously over 8-10 weeks (approximately 14 exposures) can drive significant adaptations.