A Life of Greatness Dr. Stacy Sims: Burn Fat, Train Smarter, Eat More - The Science That’s Finally Built for Women
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Jun 2, 2025 
Dr. Stacy Sims, an exercise physiologist and nutrition scientist, challenges the male-centric norms in fitness and nutrition. She explains how women must follow different rules for training and eating, advocating for higher protein and proper pre-workout fueling. Stacy highlights the importance of heavy lifting for preserving strength in midlife and discusses the mental benefits of cold exposure. She encourages women to question common trends and tune into their own bodies, empowering them to transform their health, fitness, and well-being.
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How A Quest For Equality Sparked Her Career
- Stacy Sims began her career chasing fairness after seeing female data discarded because of menstrual cycles.
- Her athlete background in running, rowing and cycling fueled research questions tied to real-world performance.
Fasted Training Backfires For Many Women
- Women respond differently to fasted training because the hypothalamus senses low energy and triggers appetite and metabolic shifts.
- Fasted exercise often causes women to eat more later and move less, undoing intended calorie deficits.
Fuel Before Morning Workouts
- Eat ~150 calories with protein and carbohydrate before morning training to signal the hypothalamus there's fuel.
- Try a protein coffee or small Greek yogurt 30–120 minutes before exercise if a full meal feels too heavy.
