Key Points from Huberman Lab Podcast with Dr. Stacy Sims
Introduction
Host: Andrew Huberman, Professor of Neurobiology and Ophthalmology at Stanford School of Medicine.
Guest: Dr. Stacy Sims, Exercise Physiologist and Nutrition Scientist specializing in women's training and nutrition.
Main Focus: How hormones and hormone cycles impact nutrition and fitness needs specifically for women.
Topics Covered: Menstrual cycle, perimenopause, menopause, fasting, training protocols, nutrition, and more.
Major Discussion Topics
Hormones and Nutrition/Fitness Needs
Importance of understanding the impact of hormonal changes at different stages of life (e.g., menstrual cycle, perimenopause, menopause).
Women should avoid training fasted; it increases stress and cortisol levels, which is counterproductive.
Pre-workout nutrition is crucial for women to avoid hormonal imbalances and maintain energy levels during training.
Suggested pre-workout nutrition: 15 grams of protein for strength training, 30 grams of carbs plus protein for cardio.
Intermittent Fasting and Time-Restricted Eating
Intermittent fasting (e.g., 20-hour fasts) is generally detrimental for active women unless they have specific conditions like PCOS.
Time-restricted eating (not eating until noon) may not be suitable for women due to its impact on cortisol levels and metabolic flexibility.
Women thrive better on a diet that aligns with their circadian rhythm, eating earlier in the day.
Training Throughout the Menstrual Cycle
Lower hormone phase (day 1 of bleeding up to ovulation): best time for high-intensity and heavy training due to better stress accommodation.
High hormone phase (after ovulation): more caution needed; higher risk of injury and altered recovery.
Individual tracking and understanding personal cycle patterns are crucial for optimal training adaptation.
Specific Training Recommendations by Age
20-30 Years: Focus on learning complex movements, resistance training 3-4 times/week, incorporate high-intensity intervals (true HIIT, Sprint Interval Training), and maintain fun in workouts.
30-40 Years: Incorporate heavier lifting, ensure periodization of training blocks, add sprint intervals or high-intensity sessions, and monitor signs of overtraining and stress.
40-50 Years: Focus on heavy lifting to combat middle age muscle and strength decline, step up intensity, take preventative measures against injuries, and balance with recovery work.
50+ Years: Emphasize bone density with jump training, heavy resistance, sprint intervals; ensure higher protein intake to combat anabolic resistance.
Recommendations for Special Populations
Menopause: Externally stress the body (heavy lifting, HIIT) to offset muscle and bone density loss; consider hormone therapy if appropriate.
Pregnancy: Stay active to maintain fitness levels through pregnancy; the body will naturally guide intensity. Avoid high-stress cold exposure.
Supplements
Creatine: Important for brain health, mood, and gut health. Recommended dosage is 3-5 grams per day (preferably CreaPure for lower gastric distress).
Vitamin D3: Essential for bone health, mood, and overall well-being. Dosage ranges from 2,000 IU to 5,000 IU based on geographical location and sun exposure.
Protein Powder: To ensure adequate protein intake, particularly if dietary protein is insufficient.
Adaptogens: For stress management, e.g., Schisandra for focus and energy, Ashwagandha and Holy Basil for cortisol regulation, and mushroom supplements like Lion’s Mane and Reishi.
Iron: Supplementation is important especially around menstrual cycles to prevent low ferritin levels.
Deliberate Cold and Heat Exposure
Cold Exposure: Beneficial but should be moderate (55-60°F water). Extreme cold can be counterproductive for women especially post-high-intensity workouts.
Heat Exposure: More universally beneficial for women. Post-training sauna (20-30 mins) helps with metabolic and cardiovascular health, can boost red blood cell count, and helps with temperature regulation benefits for menopausal women.
General Tips
Recovery and Training Adaptation: Prioritize recovery and understand individual cycle to maximize training effectiveness and maintain hormonal balance.
Nutrition: Align food intake with training needs, ensure adequate protein and carbohydrate intake to support training and recovery. Be mindful of the type and timing of food relative to workouts.
Conclusion
Dr. Stacy Sims provides tailored insights into training and nutrition specifically for women, stressing the importance of understanding hormonal effects, proper nutrition timing, varied training, and adding recovery strategies.
Recommendations include focusing on heavy lifting as women age, adequate protein intake, and individualized tracking of menstrual cycles to optimize fitness and health outcomes.
Supplements are valuable but should be strategically chosen and possibly cycled based on individual needs.